diff options
Diffstat (limited to 'net/smc/af_smc.c')
| -rw-r--r-- | net/smc/af_smc.c | 69 |
1 files changed, 59 insertions, 10 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 433bb5a7df31..79c1318af1fe 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -487,6 +487,29 @@ 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 the new vzalloced sndbuf on all links */ +static int smcr_lgr_reg_sndbufs(struct smc_link *link, + struct smc_buf_desc *snd_desc) +{ + struct smc_link_group *lgr = link->lgr; + int i, rc = 0; + + if (!snd_desc->is_vm) + return -EINVAL; + + /* protect against parallel smcr_link_reg_buf() */ + mutex_lock(&lgr->llc_conf_mutex); + for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) { + if (!smc_link_active(&lgr->lnk[i])) + continue; + rc = smcr_link_reg_buf(&lgr->lnk[i], snd_desc); + if (rc) + break; + } + mutex_unlock(&lgr->llc_conf_mutex); + return rc; +} + /* register the new rmb on all links */ static int smcr_lgr_reg_rmbs(struct smc_link *link, struct smc_buf_desc *rmb_desc) @@ -498,13 +521,13 @@ static int smcr_lgr_reg_rmbs(struct smc_link *link, if (rc) return rc; /* protect against parallel smc_llc_cli_rkey_exchange() and - * parallel smcr_link_reg_rmb() + * parallel smcr_link_reg_buf() */ mutex_lock(&lgr->llc_conf_mutex); for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) { if (!smc_link_active(&lgr->lnk[i])) continue; - rc = smcr_link_reg_rmb(&lgr->lnk[i], rmb_desc); + rc = smcr_link_reg_buf(&lgr->lnk[i], rmb_desc); if (rc) goto out; } @@ -550,8 +573,15 @@ static int smcr_clnt_conf_first_link(struct smc_sock *smc) smc_wr_remember_qp_attr(link); - if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) - return SMC_CLC_DECL_ERR_REGRMB; + /* reg the sndbuf if it was vzalloced */ + if (smc->conn.sndbuf_desc->is_vm) { + if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) + return SMC_CLC_DECL_ERR_REGBUF; + } + + /* reg the rmb */ + if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) + return SMC_CLC_DECL_ERR_REGBUF; /* confirm_rkey is implicit on 1st contact */ smc->conn.rmb_desc->is_conf_rkey = true; @@ -1221,12 +1251,18 @@ static int smc_connect_rdma(struct smc_sock *smc, goto connect_abort; } } else { + /* reg sendbufs if they were vzalloced */ + if (smc->conn.sndbuf_desc->is_vm) { + if (smcr_lgr_reg_sndbufs(link, smc->conn.sndbuf_desc)) { + reason_code = SMC_CLC_DECL_ERR_REGBUF; + goto connect_abort; + } + } if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc)) { - reason_code = SMC_CLC_DECL_ERR_REGRMB; + reason_code = SMC_CLC_DECL_ERR_REGBUF; goto connect_abort; } } - smc_rmb_sync_sg_for_device(&smc->conn); if (aclc->hdr.version > SMC_V1) { struct smc_clc_msg_accept_confirm_v2 *clc_v2 = @@ -1750,8 +1786,15 @@ static int smcr_serv_conf_first_link(struct smc_sock *smc) struct smc_llc_qentry *qentry; int rc; - if (smcr_link_reg_rmb(link, smc->conn.rmb_desc)) - return SMC_CLC_DECL_ERR_REGRMB; + /* reg the sndbuf if it was vzalloced*/ + if (smc->conn.sndbuf_desc->is_vm) { + if (smcr_link_reg_buf(link, smc->conn.sndbuf_desc)) + return SMC_CLC_DECL_ERR_REGBUF; + } + + /* reg the rmb */ + if (smcr_link_reg_buf(link, smc->conn.rmb_desc)) + return SMC_CLC_DECL_ERR_REGBUF; /* send CONFIRM LINK request to client over the RoCE fabric */ rc = smc_llc_send_confirm_link(link, SMC_LLC_REQ); @@ -2110,10 +2153,15 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, bool local_first) struct smc_connection *conn = &new_smc->conn; if (!local_first) { + /* reg sendbufs if they were vzalloced */ + if (conn->sndbuf_desc->is_vm) { + if (smcr_lgr_reg_sndbufs(conn->lnk, + conn->sndbuf_desc)) + return SMC_CLC_DECL_ERR_REGBUF; + } if (smcr_lgr_reg_rmbs(conn->lnk, conn->rmb_desc)) - return SMC_CLC_DECL_ERR_REGRMB; + return SMC_CLC_DECL_ERR_REGBUF; } - smc_rmb_sync_sg_for_device(&new_smc->conn); return 0; } @@ -3467,3 +3515,4 @@ MODULE_DESCRIPTION("smc socket address family"); MODULE_LICENSE("GPL"); MODULE_ALIAS_NETPROTO(PF_SMC); MODULE_ALIAS_TCP_ULP("smc"); +MODULE_ALIAS_GENL_FAMILY(SMC_GENL_FAMILY_NAME); |