mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 22:36:40 +07:00
qlge: Add RX frame handlers for non-split frames.
New handlers are added here to handle: 1) Small frames (<256 bytes) in a single small buffer. Allocate a new skb and copy the frame. 2) Large frame (>256 bytes) in a page chunk. Allocate an skb, tack it on frags, post to napi_gro_receive(). Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ron Mercer
David S. Miller
parent
572c526fb1
commit
4f848c0a9c
@ -1433,6 +1433,209 @@ static int ql_map_send(struct ql_adapter *qdev,
|
||||
return NETDEV_TX_BUSY;
|
||||
}
|
||||
|
||||
/* Process an inbound completion from an rx ring. */
|
||||
static void ql_process_mac_rx_page(struct ql_adapter *qdev,
|
||||
struct rx_ring *rx_ring,
|
||||
struct ib_mac_iocb_rsp *ib_mac_rsp,
|
||||
u32 length,
|
||||
u16 vlan_id)
|
||||
{
|
||||
struct net_device *ndev = qdev->ndev;
|
||||
struct sk_buff *skb = NULL;
|
||||
void *addr;
|
||||
struct bq_desc *lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
|
||||
struct napi_struct *napi = &rx_ring->napi;
|
||||
|
||||
skb = netdev_alloc_skb(ndev, length);
|
||||
if (!skb) {
|
||||
QPRINTK(qdev, DRV, ERR, "Couldn't get an skb, "
|
||||
"need to unwind!.\n");
|
||||
rx_ring->rx_dropped++;
|
||||
put_page(lbq_desc->p.pg_chunk.page);
|
||||
return;
|
||||
}
|
||||
|
||||
addr = lbq_desc->p.pg_chunk.va;
|
||||
prefetch(addr);
|
||||
|
||||
|
||||
/* Frame error, so drop the packet. */
|
||||
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
|
||||
QPRINTK(qdev, DRV, ERR, "Receive error, flags2 = 0x%x\n",
|
||||
ib_mac_rsp->flags2);
|
||||
rx_ring->rx_errors++;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
/* The max framesize filter on this chip is set higher than
|
||||
* MTU since FCoE uses 2k frames.
|
||||
*/
|
||||
if (skb->len > ndev->mtu + ETH_HLEN) {
|
||||
QPRINTK(qdev, DRV, ERR, "Segment too small, dropping.\n");
|
||||
rx_ring->rx_dropped++;
|
||||
goto err_out;
|
||||
}
|
||||
memcpy(skb_put(skb, ETH_HLEN), addr, ETH_HLEN);
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG,
|
||||
"%d bytes of headers and data in large. Chain "
|
||||
"page to new skb and pull tail.\n", length);
|
||||
skb_fill_page_desc(skb, 0, lbq_desc->p.pg_chunk.page,
|
||||
lbq_desc->p.pg_chunk.offset+ETH_HLEN,
|
||||
length-ETH_HLEN);
|
||||
skb->len += length-ETH_HLEN;
|
||||
skb->data_len += length-ETH_HLEN;
|
||||
skb->truesize += length-ETH_HLEN;
|
||||
|
||||
rx_ring->rx_packets++;
|
||||
rx_ring->rx_bytes += skb->len;
|
||||
skb->protocol = eth_type_trans(skb, ndev);
|
||||
skb->ip_summed = CHECKSUM_NONE;
|
||||
|
||||
if (qdev->rx_csum &&
|
||||
!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
|
||||
/* TCP frame. */
|
||||
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG,
|
||||
"TCP checksum done!\n");
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
|
||||
(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
|
||||
/* Unfragmented ipv4 UDP frame. */
|
||||
struct iphdr *iph = (struct iphdr *) skb->data;
|
||||
if (!(iph->frag_off &
|
||||
cpu_to_be16(IP_MF|IP_OFFSET))) {
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG,
|
||||
"TCP checksum done!\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
skb_record_rx_queue(skb, rx_ring->cq_id);
|
||||
if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
|
||||
if (qdev->vlgrp && (vlan_id != 0xffff))
|
||||
vlan_gro_receive(napi, qdev->vlgrp, vlan_id, skb);
|
||||
else
|
||||
napi_gro_receive(napi, skb);
|
||||
} else {
|
||||
if (qdev->vlgrp && (vlan_id != 0xffff))
|
||||
vlan_hwaccel_receive_skb(skb, qdev->vlgrp, vlan_id);
|
||||
else
|
||||
netif_receive_skb(skb);
|
||||
}
|
||||
return;
|
||||
err_out:
|
||||
dev_kfree_skb_any(skb);
|
||||
put_page(lbq_desc->p.pg_chunk.page);
|
||||
}
|
||||
|
||||
/* Process an inbound completion from an rx ring. */
|
||||
static void ql_process_mac_rx_skb(struct ql_adapter *qdev,
|
||||
struct rx_ring *rx_ring,
|
||||
struct ib_mac_iocb_rsp *ib_mac_rsp,
|
||||
u32 length,
|
||||
u16 vlan_id)
|
||||
{
|
||||
struct net_device *ndev = qdev->ndev;
|
||||
struct sk_buff *skb = NULL;
|
||||
struct sk_buff *new_skb = NULL;
|
||||
struct bq_desc *sbq_desc = ql_get_curr_sbuf(rx_ring);
|
||||
|
||||
skb = sbq_desc->p.skb;
|
||||
/* Allocate new_skb and copy */
|
||||
new_skb = netdev_alloc_skb(qdev->ndev, length + NET_IP_ALIGN);
|
||||
if (new_skb == NULL) {
|
||||
QPRINTK(qdev, PROBE, ERR,
|
||||
"No skb available, drop the packet.\n");
|
||||
rx_ring->rx_dropped++;
|
||||
return;
|
||||
}
|
||||
skb_reserve(new_skb, NET_IP_ALIGN);
|
||||
memcpy(skb_put(new_skb, length), skb->data, length);
|
||||
skb = new_skb;
|
||||
|
||||
/* Frame error, so drop the packet. */
|
||||
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
|
||||
QPRINTK(qdev, DRV, ERR, "Receive error, flags2 = 0x%x\n",
|
||||
ib_mac_rsp->flags2);
|
||||
dev_kfree_skb_any(skb);
|
||||
rx_ring->rx_errors++;
|
||||
return;
|
||||
}
|
||||
|
||||
/* loopback self test for ethtool */
|
||||
if (test_bit(QL_SELFTEST, &qdev->flags)) {
|
||||
ql_check_lb_frame(qdev, skb);
|
||||
dev_kfree_skb_any(skb);
|
||||
return;
|
||||
}
|
||||
|
||||
/* The max framesize filter on this chip is set higher than
|
||||
* MTU since FCoE uses 2k frames.
|
||||
*/
|
||||
if (skb->len > ndev->mtu + ETH_HLEN) {
|
||||
dev_kfree_skb_any(skb);
|
||||
rx_ring->rx_dropped++;
|
||||
return;
|
||||
}
|
||||
|
||||
prefetch(skb->data);
|
||||
skb->dev = ndev;
|
||||
if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG, "%s%s%s Multicast.\n",
|
||||
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
|
||||
IB_MAC_IOCB_RSP_M_HASH ? "Hash" : "",
|
||||
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
|
||||
IB_MAC_IOCB_RSP_M_REG ? "Registered" : "",
|
||||
(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
|
||||
IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
|
||||
}
|
||||
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P)
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
|
||||
|
||||
rx_ring->rx_packets++;
|
||||
rx_ring->rx_bytes += skb->len;
|
||||
skb->protocol = eth_type_trans(skb, ndev);
|
||||
skb->ip_summed = CHECKSUM_NONE;
|
||||
|
||||
/* If rx checksum is on, and there are no
|
||||
* csum or frame errors.
|
||||
*/
|
||||
if (qdev->rx_csum &&
|
||||
!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
|
||||
/* TCP frame. */
|
||||
if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG,
|
||||
"TCP checksum done!\n");
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
|
||||
(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
|
||||
/* Unfragmented ipv4 UDP frame. */
|
||||
struct iphdr *iph = (struct iphdr *) skb->data;
|
||||
if (!(iph->frag_off &
|
||||
cpu_to_be16(IP_MF|IP_OFFSET))) {
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
QPRINTK(qdev, RX_STATUS, DEBUG,
|
||||
"TCP checksum done!\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
skb_record_rx_queue(skb, rx_ring->cq_id);
|
||||
if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
|
||||
if (qdev->vlgrp && (vlan_id != 0xffff))
|
||||
vlan_gro_receive(&rx_ring->napi, qdev->vlgrp,
|
||||
vlan_id, skb);
|
||||
else
|
||||
napi_gro_receive(&rx_ring->napi, skb);
|
||||
} else {
|
||||
if (qdev->vlgrp && (vlan_id != 0xffff))
|
||||
vlan_hwaccel_receive_skb(skb, qdev->vlgrp, vlan_id);
|
||||
else
|
||||
netif_receive_skb(skb);
|
||||
}
|
||||
}
|
||||
|
||||
static void ql_realign_skb(struct sk_buff *skb, int len)
|
||||
{
|
||||
void *temp_addr = skb->data;
|
||||
@ -1646,14 +1849,13 @@ static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
|
||||
}
|
||||
|
||||
/* Process an inbound completion from an rx ring. */
|
||||
static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
|
||||
static void ql_process_mac_split_rx_intr(struct ql_adapter *qdev,
|
||||
struct rx_ring *rx_ring,
|
||||
struct ib_mac_iocb_rsp *ib_mac_rsp)
|
||||
struct ib_mac_iocb_rsp *ib_mac_rsp,
|
||||
u16 vlan_id)
|
||||
{
|
||||
struct net_device *ndev = qdev->ndev;
|
||||
struct sk_buff *skb = NULL;
|
||||
u16 vlan_id = (le16_to_cpu(ib_mac_rsp->vlan_id) &
|
||||
IB_MAC_IOCB_RSP_VLAN_MASK)
|
||||
|
||||
QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
|
||||
|
||||
@ -1753,6 +1955,57 @@ static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
|
||||
}
|
||||
}
|
||||
|
||||
/* Process an inbound completion from an rx ring. */
|
||||
static unsigned long ql_process_mac_rx_intr(struct ql_adapter *qdev,
|
||||
struct rx_ring *rx_ring,
|
||||
struct ib_mac_iocb_rsp *ib_mac_rsp)
|
||||
{
|
||||
u32 length = le32_to_cpu(ib_mac_rsp->data_len);
|
||||
u16 vlan_id = (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
|
||||
((le16_to_cpu(ib_mac_rsp->vlan_id) &
|
||||
IB_MAC_IOCB_RSP_VLAN_MASK)) : 0xffff;
|
||||
|
||||
QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
|
||||
|
||||
if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV) {
|
||||
/* The data and headers are split into
|
||||
* separate buffers.
|
||||
*/
|
||||
ql_process_mac_split_rx_intr(qdev, rx_ring, ib_mac_rsp,
|
||||
vlan_id);
|
||||
} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
|
||||
/* The data fit in a single small buffer.
|
||||
* Allocate a new skb, copy the data and
|
||||
* return the buffer to the free pool.
|
||||
*/
|
||||
ql_process_mac_rx_skb(qdev, rx_ring, ib_mac_rsp,
|
||||
length, vlan_id);
|
||||
} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
|
||||
/* Non-TCP packet in a page chunk. Allocate an
|
||||
* skb, tack it on frags, and send it up.
|
||||
*/
|
||||
ql_process_mac_rx_page(qdev, rx_ring, ib_mac_rsp,
|
||||
length, vlan_id);
|
||||
} else {
|
||||
struct bq_desc *lbq_desc;
|
||||
|
||||
/* Free small buffer that holds the IAL */
|
||||
lbq_desc = ql_get_curr_sbuf(rx_ring);
|
||||
QPRINTK(qdev, RX_ERR, ERR, "Dropping frame, len %d > mtu %d\n",
|
||||
length, qdev->ndev->mtu);
|
||||
|
||||
/* Unwind the large buffers for this frame. */
|
||||
while (length > 0) {
|
||||
lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
|
||||
length -= (length < rx_ring->lbq_buf_size) ?
|
||||
length : rx_ring->lbq_buf_size;
|
||||
put_page(lbq_desc->p.pg_chunk.page);
|
||||
}
|
||||
}
|
||||
|
||||
return (unsigned long)length;
|
||||
}
|
||||
|
||||
/* Process an outbound completion from an rx ring. */
|
||||
static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
|
||||
struct ob_mac_iocb_rsp *mac_rsp)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user