mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-27 00:40:53 +07:00
drbd: Implemented receiving of new style packets on meta socket
Now drbd communication with protocol 100 actually works. Replaced the remaining p_header80 with p_header where we no longer know which header it is. In the places where p_header80 is still in use, it is on purpose, because we know that it is an old style header there. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner
parent
fd340c12c9
commit
257d0af689
@ -926,18 +926,9 @@ static int drbd_connect(struct drbd_conf *mdev)
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return -1;
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}
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static int drbd_recv_header(struct drbd_conf *mdev, enum drbd_packets *cmd, unsigned int *packet_size)
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static bool decode_header(struct drbd_conf *mdev, struct p_header *h, enum drbd_packets *cmd,
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unsigned int *packet_size)
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{
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struct p_header *h = &mdev->tconn->data.rbuf.header;
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int r;
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r = drbd_recv(mdev, h, sizeof(*h));
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if (unlikely(r != sizeof(*h))) {
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if (!signal_pending(current))
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dev_warn(DEV, "short read expecting header on sock: r=%d\n", r);
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return false;
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}
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if (h->h80.magic == cpu_to_be32(DRBD_MAGIC)) {
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*cmd = be16_to_cpu(h->h80.command);
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*packet_size = be16_to_cpu(h->h80.length);
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@ -951,9 +942,25 @@ static int drbd_recv_header(struct drbd_conf *mdev, enum drbd_packets *cmd, unsi
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be16_to_cpu(h->h80.length));
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return false;
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}
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return true;
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}
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static int drbd_recv_header(struct drbd_conf *mdev, enum drbd_packets *cmd, unsigned int *packet_size)
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{
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struct p_header *h = &mdev->tconn->data.rbuf.header;
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int r;
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r = drbd_recv(mdev, h, sizeof(*h));
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if (unlikely(r != sizeof(*h))) {
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if (!signal_pending(current))
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dev_warn(DEV, "short read expecting header on sock: r=%d\n", r);
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return false;
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}
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r = decode_header(mdev, h, cmd, packet_size);
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mdev->tconn->last_received = jiffies;
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return true;
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return r;
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}
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static void drbd_flush(struct drbd_conf *mdev)
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@ -2807,14 +2814,14 @@ static int receive_SyncParam(struct drbd_conf *mdev, enum drbd_packets cmd, unsi
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}
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if (apv <= 88) {
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header_size = sizeof(struct p_rs_param) - sizeof(struct p_header80);
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header_size = sizeof(struct p_rs_param) - sizeof(struct p_header);
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data_size = packet_size - header_size;
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} else if (apv <= 94) {
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header_size = sizeof(struct p_rs_param_89) - sizeof(struct p_header80);
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header_size = sizeof(struct p_rs_param_89) - sizeof(struct p_header);
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data_size = packet_size - header_size;
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D_ASSERT(data_size == 0);
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} else {
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header_size = sizeof(struct p_rs_param_95) - sizeof(struct p_header80);
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header_size = sizeof(struct p_rs_param_95) - sizeof(struct p_header);
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data_size = packet_size - header_size;
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D_ASSERT(data_size == 0);
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}
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@ -3524,7 +3531,7 @@ static int receive_bitmap(struct drbd_conf *mdev, enum drbd_packets cmd, unsigne
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void *buffer;
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int err;
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int ok = false;
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struct p_header80 *h = &mdev->tconn->data.rbuf.header.h80;
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struct p_header *h = &mdev->tconn->data.rbuf.header;
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drbd_bm_lock(mdev, "receive bitmap", BM_LOCKED_SET_ALLOWED);
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/* you are supposed to send additional out-of-sync information
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@ -3571,7 +3578,7 @@ static int receive_bitmap(struct drbd_conf *mdev, enum drbd_packets cmd, unsigne
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}
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c.packets[cmd == P_BITMAP]++;
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c.bytes[cmd == P_BITMAP] += sizeof(struct p_header80) + data_size;
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c.bytes[cmd == P_BITMAP] += sizeof(struct p_header) + data_size;
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if (err <= 0) {
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if (err < 0)
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@ -3670,13 +3677,13 @@ static struct data_cmd drbd_cmd_handler[] = {
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[P_DATA_REPLY] = { 1, sizeof(struct p_data), receive_DataReply },
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[P_RS_DATA_REPLY] = { 1, sizeof(struct p_data), receive_RSDataReply } ,
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[P_BARRIER] = { 0, sizeof(struct p_barrier), receive_Barrier } ,
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[P_BITMAP] = { 1, sizeof(struct p_header80), receive_bitmap } ,
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[P_COMPRESSED_BITMAP] = { 1, sizeof(struct p_header80), receive_bitmap } ,
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[P_UNPLUG_REMOTE] = { 0, sizeof(struct p_header80), receive_UnplugRemote },
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[P_BITMAP] = { 1, sizeof(struct p_header), receive_bitmap } ,
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[P_COMPRESSED_BITMAP] = { 1, sizeof(struct p_header), receive_bitmap } ,
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[P_UNPLUG_REMOTE] = { 0, sizeof(struct p_header), receive_UnplugRemote },
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[P_DATA_REQUEST] = { 0, sizeof(struct p_block_req), receive_DataRequest },
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[P_RS_DATA_REQUEST] = { 0, sizeof(struct p_block_req), receive_DataRequest },
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[P_SYNC_PARAM] = { 1, sizeof(struct p_header80), receive_SyncParam },
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[P_SYNC_PARAM89] = { 1, sizeof(struct p_header80), receive_SyncParam },
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[P_SYNC_PARAM] = { 1, sizeof(struct p_header), receive_SyncParam },
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[P_SYNC_PARAM89] = { 1, sizeof(struct p_header), receive_SyncParam },
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[P_PROTOCOL] = { 1, sizeof(struct p_protocol), receive_protocol },
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[P_UUIDS] = { 0, sizeof(struct p_uuids), receive_uuids },
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[P_SIZES] = { 0, sizeof(struct p_sizes), receive_sizes },
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@ -4184,9 +4191,9 @@ int drbdd_init(struct drbd_thread *thi)
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/* ********* acknowledge sender ******** */
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static int got_RqSReply(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_RqSReply(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_req_state_reply *p = (struct p_req_state_reply *)h;
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struct p_req_state_reply *p = &mdev->tconn->meta.rbuf.req_state_reply;
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int retcode = be32_to_cpu(p->retcode);
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@ -4202,13 +4209,13 @@ static int got_RqSReply(struct drbd_conf *mdev, struct p_header80 *h)
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return true;
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}
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static int got_Ping(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_Ping(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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return drbd_send_ping_ack(mdev);
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}
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static int got_PingAck(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_PingAck(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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/* restore idle timeout */
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mdev->tconn->meta.socket->sk->sk_rcvtimeo = mdev->tconn->net_conf->ping_int*HZ;
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@ -4218,9 +4225,9 @@ static int got_PingAck(struct drbd_conf *mdev, struct p_header80 *h)
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return true;
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}
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static int got_IsInSync(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_IsInSync(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_block_ack *p = (struct p_block_ack *)h;
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struct p_block_ack *p = &mdev->tconn->meta.rbuf.block_ack;
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sector_t sector = be64_to_cpu(p->sector);
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int blksize = be32_to_cpu(p->blksize);
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@ -4263,9 +4270,9 @@ validate_req_change_req_state(struct drbd_conf *mdev, u64 id, sector_t sector,
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return true;
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}
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static int got_BlockAck(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_BlockAck(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_block_ack *p = (struct p_block_ack *)h;
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struct p_block_ack *p = &mdev->tconn->meta.rbuf.block_ack;
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sector_t sector = be64_to_cpu(p->sector);
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int blksize = be32_to_cpu(p->blksize);
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enum drbd_req_event what;
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@ -4277,7 +4284,7 @@ static int got_BlockAck(struct drbd_conf *mdev, struct p_header80 *h)
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dec_rs_pending(mdev);
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return true;
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}
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switch (be16_to_cpu(h->command)) {
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switch (cmd) {
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case P_RS_WRITE_ACK:
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D_ASSERT(mdev->tconn->net_conf->wire_protocol == DRBD_PROT_C);
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what = WRITE_ACKED_BY_PEER_AND_SIS;
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@ -4304,9 +4311,9 @@ static int got_BlockAck(struct drbd_conf *mdev, struct p_header80 *h)
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what, false);
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}
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static int got_NegAck(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_NegAck(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_block_ack *p = (struct p_block_ack *)h;
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struct p_block_ack *p = &mdev->tconn->meta.rbuf.block_ack;
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sector_t sector = be64_to_cpu(p->sector);
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int size = be32_to_cpu(p->blksize);
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bool missing_ok = mdev->tconn->net_conf->wire_protocol == DRBD_PROT_A ||
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@ -4337,9 +4344,9 @@ static int got_NegAck(struct drbd_conf *mdev, struct p_header80 *h)
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return true;
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}
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static int got_NegDReply(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_NegDReply(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_block_ack *p = (struct p_block_ack *)h;
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struct p_block_ack *p = &mdev->tconn->meta.rbuf.block_ack;
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sector_t sector = be64_to_cpu(p->sector);
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update_peer_seq(mdev, be32_to_cpu(p->seq_num));
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@ -4351,11 +4358,11 @@ static int got_NegDReply(struct drbd_conf *mdev, struct p_header80 *h)
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NEG_ACKED, false);
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}
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static int got_NegRSDReply(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_NegRSDReply(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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sector_t sector;
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int size;
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struct p_block_ack *p = (struct p_block_ack *)h;
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struct p_block_ack *p = &mdev->tconn->meta.rbuf.block_ack;
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sector = be64_to_cpu(p->sector);
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size = be32_to_cpu(p->blksize);
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@ -4366,7 +4373,7 @@ static int got_NegRSDReply(struct drbd_conf *mdev, struct p_header80 *h)
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if (get_ldev_if_state(mdev, D_FAILED)) {
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drbd_rs_complete_io(mdev, sector);
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switch (be16_to_cpu(h->command)) {
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switch (cmd) {
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case P_NEG_RS_DREPLY:
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drbd_rs_failed_io(mdev, sector, size);
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case P_RS_CANCEL:
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@ -4382,9 +4389,9 @@ static int got_NegRSDReply(struct drbd_conf *mdev, struct p_header80 *h)
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return true;
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}
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static int got_BarrierAck(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_BarrierAck(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_barrier_ack *p = (struct p_barrier_ack *)h;
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struct p_barrier_ack *p = &mdev->tconn->meta.rbuf.barrier_ack;
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tl_release(mdev, p->barrier, be32_to_cpu(p->set_size));
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@ -4398,9 +4405,9 @@ static int got_BarrierAck(struct drbd_conf *mdev, struct p_header80 *h)
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return true;
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}
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static int got_OVResult(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_OVResult(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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struct p_block_ack *p = (struct p_block_ack *)h;
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struct p_block_ack *p = &mdev->tconn->meta.rbuf.block_ack;
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struct drbd_work *w;
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sector_t sector;
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int size;
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@ -4442,14 +4449,14 @@ static int got_OVResult(struct drbd_conf *mdev, struct p_header80 *h)
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return true;
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}
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static int got_skip(struct drbd_conf *mdev, struct p_header80 *h)
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static int got_skip(struct drbd_conf *mdev, enum drbd_packets cmd)
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{
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return true;
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}
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struct asender_cmd {
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size_t pkt_size;
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int (*process)(struct drbd_conf *mdev, struct p_header80 *h);
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int (*process)(struct drbd_conf *mdev, enum drbd_packets cmd);
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};
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static struct asender_cmd *get_asender_cmd(int cmd)
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@ -4458,8 +4465,8 @@ static struct asender_cmd *get_asender_cmd(int cmd)
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/* anything missing from this table is in
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* the drbd_cmd_handler (drbd_default_handler) table,
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* see the beginning of drbdd() */
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[P_PING] = { sizeof(struct p_header80), got_Ping },
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[P_PING_ACK] = { sizeof(struct p_header80), got_PingAck },
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[P_PING] = { sizeof(struct p_header), got_Ping },
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[P_PING_ACK] = { sizeof(struct p_header), got_PingAck },
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[P_RECV_ACK] = { sizeof(struct p_block_ack), got_BlockAck },
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[P_WRITE_ACK] = { sizeof(struct p_block_ack), got_BlockAck },
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[P_RS_WRITE_ACK] = { sizeof(struct p_block_ack), got_BlockAck },
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@ -4483,15 +4490,16 @@ static struct asender_cmd *get_asender_cmd(int cmd)
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int drbd_asender(struct drbd_thread *thi)
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{
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struct drbd_conf *mdev = thi->mdev;
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struct p_header80 *h = &mdev->tconn->meta.rbuf.header.h80;
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struct p_header *h = &mdev->tconn->meta.rbuf.header;
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struct asender_cmd *cmd = NULL;
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int rv, len;
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int rv;
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void *buf = h;
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int received = 0;
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int expect = sizeof(struct p_header80);
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int empty;
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int expect = sizeof(struct p_header);
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int ping_timeout_active = 0;
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int empty, pkt_size;
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enum drbd_packets cmd_nr;
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sprintf(current->comm, "drbd%d_asender", mdev_to_minor(mdev));
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@ -4581,30 +4589,25 @@ int drbd_asender(struct drbd_thread *thi)
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}
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if (received == expect && cmd == NULL) {
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if (unlikely(h->magic != cpu_to_be32(DRBD_MAGIC))) {
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dev_err(DEV, "magic?? on meta m: 0x%08x c: %d l: %d\n",
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be32_to_cpu(h->magic),
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be16_to_cpu(h->command),
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be16_to_cpu(h->length));
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if (!decode_header(mdev, h, &cmd_nr, &pkt_size))
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goto reconnect;
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}
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cmd = get_asender_cmd(be16_to_cpu(h->command));
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len = be16_to_cpu(h->length);
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cmd = get_asender_cmd(cmd_nr);
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if (unlikely(cmd == NULL)) {
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dev_err(DEV, "unknown command?? on meta m: 0x%08x c: %d l: %d\n",
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be32_to_cpu(h->magic),
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be16_to_cpu(h->command),
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be16_to_cpu(h->length));
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dev_err(DEV, "unknown command %d on meta (l: %d)\n",
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cmd_nr, pkt_size);
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goto disconnect;
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}
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expect = cmd->pkt_size;
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if (!expect(len == expect - sizeof(struct p_header80)))
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if (pkt_size != expect - sizeof(struct p_header)) {
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dev_err(DEV, "Wrong packet size on meta (c: %d, l: %d)\n",
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cmd_nr, pkt_size);
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goto reconnect;
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}
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}
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if (received == expect) {
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mdev->tconn->last_received = jiffies;
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D_ASSERT(cmd != NULL);
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if (!cmd->process(mdev, h))
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if (!cmd->process(mdev, cmd_nr))
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goto reconnect;
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/* the idle_timeout (ping-int)
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@ -4614,7 +4617,7 @@ int drbd_asender(struct drbd_thread *thi)
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buf = h;
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received = 0;
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expect = sizeof(struct p_header80);
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expect = sizeof(struct p_header);
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cmd = NULL;
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}
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}
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