diff options
author | Ursula Braun <ubraun@linux.ibm.com> | 2020-09-26 12:44:20 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2020-09-28 15:19:02 -0700 |
commit | f1eb02f952448405e360d94649846668c32364e1 (patch) | |
tree | b108d4d4c3f2c6d2aac59834a5cdda2188ef948d /net/smc | |
parent | a304e29a2418ea8dd77215f5bc4bc27f4ed8e7da (diff) | |
download | linux-f1eb02f952448405e360d94649846668c32364e1.tar.bz2 |
net/smc: CLC header fields renaming
SMCD version 2 defines 2 more bits in the CLC header to specify
version 2 types. This patch prepares better naming of the CLC
header fields. No functional change.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
-rw-r--r-- | net/smc/af_smc.c | 14 | ||||
-rw-r--r-- | net/smc/smc_clc.c | 22 | ||||
-rw-r--r-- | net/smc/smc_clc.h | 12 |
3 files changed, 25 insertions, 23 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index ed8f97166be9..1a02d3665c46 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -618,7 +618,7 @@ static int smc_connect_rdma(struct smc_sock *smc, ini->is_smcd = false; ini->ib_lcl = &aclc->r0.lcl; ini->ib_clcqpn = ntoh24(aclc->r0.qpn); - ini->first_contact_peer = aclc->hdr.flag; + ini->first_contact_peer = aclc->hdr.typev2 & SMC_FIRST_CONTACT_MASK; mutex_lock(&smc_client_lgr_pending); reason_code = smc_conn_create(smc, ini); @@ -713,7 +713,7 @@ static int smc_connect_ism(struct smc_sock *smc, ini->is_smcd = true; ini->ism_peer_gid = aclc->d0.gid; - ini->first_contact_peer = aclc->hdr.flag; + ini->first_contact_peer = aclc->hdr.typev2 & SMC_FIRST_CONTACT_MASK; /* there is only one lgr role for SMC-D; use server lock */ mutex_lock(&smc_server_lgr_pending); @@ -804,9 +804,9 @@ static int __smc_connect(struct smc_sock *smc) } /* depending on previous steps, connect using rdma or ism */ - if (rdma_supported && aclc.hdr.path == SMC_TYPE_R) + if (rdma_supported && aclc.hdr.typev1 == SMC_TYPE_R) rc = smc_connect_rdma(smc, &aclc, &ini); - else if (ism_supported && aclc.hdr.path == SMC_TYPE_D) + else if (ism_supported && aclc.hdr.typev1 == SMC_TYPE_D) rc = smc_connect_ism(smc, &aclc, &ini); else rc = SMC_CLC_DECL_MODEUNSUPP; @@ -1316,7 +1316,7 @@ static void smc_listen_work(struct work_struct *work) smc_tx_init(new_smc); /* check if ISM is available */ - if (pclc->hdr.path == SMC_TYPE_D || pclc->hdr.path == SMC_TYPE_B) { + if (pclc->hdr.typev1 == SMC_TYPE_D || pclc->hdr.typev1 == SMC_TYPE_B) { struct smc_clc_msg_smcd *pclc_smcd = smc_get_clc_msg_smcd(pclc); ini.is_smcd = true; /* prepare ISM check */ @@ -1326,7 +1326,7 @@ static void smc_listen_work(struct work_struct *work) rc = smc_listen_ism_init(new_smc, pclc, &ini); if (!rc) ism_supported = true; - else if (pclc->hdr.path == SMC_TYPE_D) + else if (pclc->hdr.typev1 == SMC_TYPE_D) goto out_unlock; /* skip RDMA and decline */ } @@ -1339,7 +1339,7 @@ static void smc_listen_work(struct work_struct *work) rc = smc_find_rdma_device(new_smc, &ini); if (rc) { /* no RDMA device found */ - if (pclc->hdr.path == SMC_TYPE_B) + if (pclc->hdr.typev1 == SMC_TYPE_B) /* neither ISM nor RDMA device found */ rc = SMC_CLC_DECL_NOSMCDEV; goto out_unlock; diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c index bd116e1949b9..524d2b225640 100644 --- a/net/smc/smc_clc.c +++ b/net/smc/smc_clc.c @@ -64,12 +64,12 @@ static bool smc_clc_msg_hdr_valid(struct smc_clc_msg_hdr *clcm, bool check_trl) break; case SMC_CLC_ACCEPT: case SMC_CLC_CONFIRM: - if (clcm->path != SMC_TYPE_R && clcm->path != SMC_TYPE_D) + if (clcm->typev1 != SMC_TYPE_R && clcm->typev1 != SMC_TYPE_D) return false; clc = (struct smc_clc_msg_accept_confirm *)clcm; - if ((clcm->path == SMC_TYPE_R && + if ((clcm->typev1 == SMC_TYPE_R && ntohs(clc->hdr.length) != SMCR_CLC_ACCEPT_CONFIRM_LEN) || - (clcm->path == SMC_TYPE_D && + (clcm->typev1 == SMC_TYPE_D && ntohs(clc->hdr.length) != SMCD_CLC_ACCEPT_CONFIRM_LEN)) return false; trl = (struct smc_clc_msg_trail *) @@ -327,7 +327,7 @@ int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen, goto out; } - if (clcm->type == SMC_CLC_PROPOSAL && clcm->path == SMC_TYPE_N) + if (clcm->type == SMC_CLC_PROPOSAL && clcm->typev1 == SMC_TYPE_N) reason_code = SMC_CLC_DECL_VERSMISMAT; /* just V2 offered */ /* receive the complete CLC message */ @@ -365,7 +365,8 @@ int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen, dclc = (struct smc_clc_msg_decline *)clcm; reason_code = SMC_CLC_DECL_PEERDECL; smc->peer_diagnosis = ntohl(dclc->peer_diagnosis); - if (((struct smc_clc_msg_decline *)buf)->hdr.flag) { + if (((struct smc_clc_msg_decline *)buf)->hdr.typev2 & + SMC_FIRST_CONTACT_MASK) { smc->conn.lgr->sync_err = 1; smc_lgr_terminate_sched(smc->conn.lgr); } @@ -389,7 +390,8 @@ int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info) dclc.hdr.type = SMC_CLC_DECLINE; dclc.hdr.length = htons(sizeof(struct smc_clc_msg_decline)); dclc.hdr.version = SMC_V1; - dclc.hdr.flag = (peer_diag_info == SMC_CLC_DECL_SYNCERR) ? 1 : 0; + dclc.hdr.typev2 = (peer_diag_info == SMC_CLC_DECL_SYNCERR) ? + SMC_FIRST_CONTACT_MASK : 0; if ((!smc->conn.lgr || !smc->conn.lgr->is_smcd) && smc_ib_is_valid_local_systemid()) memcpy(dclc.id_for_peer, local_systemid, @@ -447,7 +449,7 @@ int smc_clc_send_proposal(struct smc_sock *smc, int smc_type, sizeof(SMC_EYECATCHER)); pclc_base->hdr.type = SMC_CLC_PROPOSAL; pclc_base->hdr.version = SMC_V1; /* SMC version */ - pclc_base->hdr.path = smc_type; + pclc_base->hdr.typev1 = smc_type; if (smc_type == SMC_TYPE_R || smc_type == SMC_TYPE_B) { /* add SMC-R specifics */ memcpy(pclc_base->lcl.id_for_peer, local_systemid, @@ -509,12 +511,12 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc, /* send SMC Confirm CLC msg */ clc->hdr.version = SMC_V1; /* SMC version */ if (first_contact) - clc->hdr.flag = 1; + clc->hdr.typev2 |= SMC_FIRST_CONTACT_MASK; if (conn->lgr->is_smcd) { /* SMC-D specific settings */ memcpy(clc->hdr.eyecatcher, SMCD_EYECATCHER, sizeof(SMCD_EYECATCHER)); - clc->hdr.path = SMC_TYPE_D; + clc->hdr.typev1 = SMC_TYPE_D; clc->hdr.length = htons(SMCD_CLC_ACCEPT_CONFIRM_LEN); clc->d0.gid = conn->lgr->smcd->local_gid; clc->d0.token = conn->rmb_desc->token; @@ -530,7 +532,7 @@ static int smc_clc_send_confirm_accept(struct smc_sock *smc, link = conn->lnk; memcpy(clc->hdr.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER)); - clc->hdr.path = SMC_TYPE_R; + clc->hdr.typev1 = SMC_TYPE_R; clc->hdr.length = htons(SMCR_CLC_ACCEPT_CONFIRM_LEN); memcpy(clc->r0.lcl.id_for_peer, local_systemid, sizeof(local_systemid)); diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h index fcd8521c7737..5b2d0582886e 100644 --- a/net/smc/smc_clc.h +++ b/net/smc/smc_clc.h @@ -54,19 +54,19 @@ #define SMC_CLC_DECL_ERR_RDYLNK 0x09990002 /* ib ready link failed */ #define SMC_CLC_DECL_ERR_REGRMB 0x09990003 /* reg rmb failed */ +#define SMC_FIRST_CONTACT_MASK 0b10 /* first contact bit within typev2 */ + struct smc_clc_msg_hdr { /* header1 of clc messages */ u8 eyecatcher[4]; /* eye catcher */ u8 type; /* proposal / accept / confirm / decline */ __be16 length; #if defined(__BIG_ENDIAN_BITFIELD) u8 version : 4, - flag : 1, - rsvd : 1, - path : 2; + typev2 : 2, + typev1 : 2; #elif defined(__LITTLE_ENDIAN_BITFIELD) - u8 path : 2, - rsvd : 1, - flag : 1, + u8 typev1 : 2, + typev2 : 2, version : 4; #endif } __packed; /* format defined in RFC7609 */ |