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Merge branch 'net-smc-fixes'

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Ursula Braun says:

====================
net/smc: fixes 2018-09-18

here are some fixes in different areas of the smc code for the net
tree.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2018-09-18 20:11:43 -07:00
commit 81d0b759e1
3 changed files with 29 additions and 25 deletions
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26
net/smc/af_smc.c
View File

@ -742,7 +742,10 @@ static void smc_connect_work(struct work_struct *work)
smc->sk.sk_err = -rc;
out:
smc->sk.sk_state_change(&smc->sk);
if (smc->sk.sk_err)
smc->sk.sk_state_change(&smc->sk);
else
smc->sk.sk_write_space(&smc->sk);
kfree(smc->connect_info);
smc->connect_info = NULL;
release_sock(&smc->sk);
@ -1150,9 +1153,9 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact)
}
/* listen worker: finish RDMA setup */
static void smc_listen_rdma_finish(struct smc_sock *new_smc,
struct smc_clc_msg_accept_confirm *cclc,
int local_contact)
static int smc_listen_rdma_finish(struct smc_sock *new_smc,
struct smc_clc_msg_accept_confirm *cclc,
int local_contact)
{
struct smc_link *link = &new_smc->conn.lgr->lnk[SMC_SINGLE_LINK];
int reason_code = 0;
@ -1175,11 +1178,12 @@ static void smc_listen_rdma_finish(struct smc_sock *new_smc,
if (reason_code)
goto decline;
}
return;
return 0;
decline:
mutex_unlock(&smc_create_lgr_pending);
smc_listen_decline(new_smc, reason_code, local_contact);
return reason_code;
}
/* setup for RDMA connection of server */
@ -1276,8 +1280,10 @@ static void smc_listen_work(struct work_struct *work)
}
/* finish worker */
if (!ism_supported)
smc_listen_rdma_finish(new_smc, &cclc, local_contact);
if (!ism_supported) {
if (smc_listen_rdma_finish(new_smc, &cclc, local_contact))
return;
}
smc_conn_save_peer_info(new_smc, &cclc);
mutex_unlock(&smc_create_lgr_pending);
smc_listen_out_connected(new_smc);
@ -1529,7 +1535,7 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
return EPOLLNVAL;
smc = smc_sk(sock->sk);
if ((sk->sk_state == SMC_INIT) || smc->use_fallback) {
if (smc->use_fallback) {
/* delegate to CLC child sock */
mask = smc->clcsock->ops->poll(file, smc->clcsock, wait);
sk->sk_err = smc->clcsock->sk->sk_err;
@ -1560,9 +1566,9 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
mask |= EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;
if (sk->sk_state == SMC_APPCLOSEWAIT1)
mask |= EPOLLIN;
if (smc->conn.urg_state == SMC_URG_VALID)
mask |= EPOLLPRI;
}
if (smc->conn.urg_state == SMC_URG_VALID)
mask |= EPOLLPRI;
}
return mask;

14
net/smc/smc_clc.c
View File

@ -446,14 +446,12 @@ int smc_clc_send_proposal(struct smc_sock *smc, int smc_type,
vec[i++].iov_len = sizeof(trl);
/* due to the few bytes needed for clc-handshake this cannot block */
len = kernel_sendmsg(smc->clcsock, &msg, vec, i, plen);
if (len < sizeof(pclc)) {
if (len >= 0) {
reason_code = -ENETUNREACH;
smc->sk.sk_err = -reason_code;
} else {
smc->sk.sk_err = smc->clcsock->sk->sk_err;
reason_code = -smc->sk.sk_err;
}
if (len < 0) {
smc->sk.sk_err = smc->clcsock->sk->sk_err;
reason_code = -smc->sk.sk_err;
} else if (len < (int)sizeof(pclc)) {
reason_code = -ENETUNREACH;
smc->sk.sk_err = -reason_code;
}
return reason_code;

14
net/smc/smc_close.c
View File

@ -100,15 +100,14 @@ static void smc_close_active_abort(struct smc_sock *smc)
struct smc_cdc_conn_state_flags *txflags =
&smc->conn.local_tx_ctrl.conn_state_flags;
sk->sk_err = ECONNABORTED;
if (smc->clcsock && smc->clcsock->sk) {
smc->clcsock->sk->sk_err = ECONNABORTED;
smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
if (sk->sk_state != SMC_INIT && smc->clcsock && smc->clcsock->sk) {
sk->sk_err = ECONNABORTED;
if (smc->clcsock && smc->clcsock->sk) {
smc->clcsock->sk->sk_err = ECONNABORTED;
smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
}
}
switch (sk->sk_state) {
case SMC_INIT:
sk->sk_state = SMC_PEERABORTWAIT;
break;
case SMC_ACTIVE:
sk->sk_state = SMC_PEERABORTWAIT;
release_sock(sk);
@ -143,6 +142,7 @@ static void smc_close_active_abort(struct smc_sock *smc)
case SMC_PEERFINCLOSEWAIT:
sock_put(sk); /* passive closing */
break;
case SMC_INIT:
case SMC_PEERABORTWAIT:
case SMC_CLOSED:
break;