[PATCH net-next v2 3/7] net/smc: introduce virtual ISM device support feature

Wen Gu
2023-11-24T14:42:27Z

This introduces virtual ISM device support feature to SMCv2.1 as the
first supplemental feature.

Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
---
net/smc/af_smc.c | 2 ++
net/smc/smc.h | 9 ++++++---
2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index c61666e..766a1f1 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1520,6 +1520,7 @@ static int __smc_connect(struct smc_sock *smc)
ini->smcr_version = SMC_V1 | SMC_V2;
ini->smc_type_v1 = SMC_TYPE_B;
ini->smc_type_v2 = SMC_TYPE_B;
+ ini->feature_mask = SMC_FEATURE_MASK;

/* get vlan id from IP device */
if (smc_vlan_by_tcpsk(smc->clcsock, ini)) {
@@ -1985,6 +1986,7 @@ static int smc_listen_v2_check(struct smc_sock *new_smc,
ini->smc_type_v2 = pclc->hdr.typev2;
ini->smcd_version = smcd_indicated(ini->smc_type_v1) ? SMC_V1 : 0;
ini->smcr_version = smcr_indicated(ini->smc_type_v1) ? SMC_V1 : 0;
+ ini->feature_mask = SMC_FEATURE_MASK;
if (pclc->hdr.version > SMC_V1) {
if (smcd_indicated(ini->smc_type_v2))
ini->smcd_version |= SMC_V2;
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 903b151..9929d1e 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -58,9 +58,12 @@ enum smc_state { /* possible states of an SMC socket */
SMC_PROCESSABORT = 27,
};

-#define SMC_FEATURE_MASK 0 /* bitmask of
- * supported supplemental features
- */
+enum smc_supplemental_features {
+ SMC_SPF_VIRT_ISM_DEV = 0,
+};
+
+#define SMC_FEATURE_MASK \
+ (BIT(SMC_SPF_VIRT_ISM_DEV))

struct smc_link_group;

--
1.8.3.1