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| author | Guangguan Wang <guangguan.wang@linux.alibaba.com> | 2024-12-11 10:30:55 +0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-12-12 13:50:00 +0100 |
| commit | c12b2704a678b8a116eeb03f5b91895b90b4dd6f (patch) | |
| tree | 499008015bd1e09a0717d86add5680e9b4227d92 | |
| parent | 27ef6a9981fe74191849966a6d5e0400a4008ab8 (diff) | |
| download | linux-stable-c12b2704a678b8a116eeb03f5b91895b90b4dd6f.tar.gz linux-stable-c12b2704a678b8a116eeb03f5b91895b90b4dd6f.tar.bz2 linux-stable-c12b2704a678b8a116eeb03f5b91895b90b4dd6f.zip | |
net/smc: support ipv4 mapped ipv6 addr client for smc-r v2
AF_INET6 is not supported for smc-r v2 client before, even if the
ipv6 addr is ipv4 mapped. Thus, when using AF_INET6, smc-r connection
will fallback to tcp, especially for java applications running smc-r.
This patch support ipv4 mapped ipv6 addr client for smc-r v2. Clients
using real global ipv6 addr is still not supported yet.
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Reviewed-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Reviewed-by: D. Wythe <alibuda@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | net/smc/af_smc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index 9e6c69d18581..19ebff1c2579 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1117,7 +1117,10 @@ static int smc_find_proposal_devices(struct smc_sock *smc, ini->check_smcrv2 = true; ini->smcrv2.saddr = smc->clcsock->sk->sk_rcv_saddr; if (!(ini->smcr_version & SMC_V2) || - smc->clcsock->sk->sk_family != AF_INET || +#if IS_ENABLED(CONFIG_IPV6) + (smc->clcsock->sk->sk_family == AF_INET6 && + !ipv6_addr_v4mapped(&smc->clcsock->sk->sk_v6_rcv_saddr)) || +#endif !smc_clc_ueid_count() || smc_find_rdma_device(smc, ini)) ini->smcr_version &= ~SMC_V2; |