xiaomi-sm8450/android_kernel_xiaomi_sm8450
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net/smc: register new rmbs with the peer

소스 검색 
Register new rmb buffers with the remote peer by exchanging a
confirm_rkey llc message.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Graul
2018-05-15 17:04:55 +02:00
committed by David S. Miller
부모 569bc64365
커밋 44aa81ce95
5개의 변경된 파일과 64개의 추가작업 그리고 8개의 파일을 삭제
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20
net/smc/af_smc.c
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@@ -293,14 +293,22 @@ static void smc_copy_sock_settings_to_smc(struct smc_sock *smc)
smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC);
}
/* register a new rmb */
static int smc_reg_rmb(struct smc_link *link, struct smc_buf_desc *rmb_desc)
/* register a new rmb, optionally send confirm_rkey msg to register with peer */
static int smc_reg_rmb(struct smc_link *link, struct smc_buf_desc *rmb_desc,
bool conf_rkey)
{
/* register memory region for new rmb */
if (smc_wr_reg_send(link, rmb_desc->mr_rx[SMC_SINGLE_LINK])) {
rmb_desc->regerr = 1;
return -EFAULT;
}
if (!conf_rkey)
return 0;
/* exchange confirm_rkey msg with peer */
if (smc_llc_do_confirm_rkey(link, rmb_desc)) {
rmb_desc->regerr = 1;
return -EFAULT;
}
return 0;
}
@@ -334,7 +342,7 @@ static int smc_clnt_conf_first_link(struct smc_sock *smc)
smc_wr_remember_qp_attr(link);
if (smc_reg_rmb(link, smc->conn.rmb_desc))
if (smc_reg_rmb(link, smc->conn.rmb_desc, false))
return SMC_CLC_DECL_INTERR;
/* send CONFIRM LINK response over RoCE fabric */
@@ -488,7 +496,7 @@ static int smc_connect_rdma(struct smc_sock *smc)
}
} else {
if (!smc->conn.rmb_desc->reused) {
if (smc_reg_rmb(link, smc->conn.rmb_desc)) {
if (smc_reg_rmb(link, smc->conn.rmb_desc, true)) {
reason_code = SMC_CLC_DECL_INTERR;
goto decline_rdma_unlock;
}
@@ -729,7 +737,7 @@ static int smc_serv_conf_first_link(struct smc_sock *smc)
link = &lgr->lnk[SMC_SINGLE_LINK];
if (smc_reg_rmb(link, smc->conn.rmb_desc))
if (smc_reg_rmb(link, smc->conn.rmb_desc, false))
return SMC_CLC_DECL_INTERR;
/* send CONFIRM LINK request to client over the RoCE fabric */
@@ -866,7 +874,7 @@ static void smc_listen_work(struct work_struct *work)
if (local_contact != SMC_FIRST_CONTACT) {
if (!new_smc->conn.rmb_desc->reused) {
if (smc_reg_rmb(link, new_smc->conn.rmb_desc)) {
if (smc_reg_rmb(link, new_smc->conn.rmb_desc, true)) {
reason_code = SMC_CLC_DECL_INTERR;
goto decline_rdma_unlock;
}