D. Wythe d25a92ccae
net/smc: Introduce IPPROTO_SMC ...
This patch allows to create smc socket via AF_INET,
similar to the following code,
/* create v4 smc sock */
v4 = socket(AF_INET, SOCK_STREAM, IPPROTO_SMC);
/* create v6 smc sock */
v6 = socket(AF_INET6, SOCK_STREAM, IPPROTO_SMC);
There are several reasons why we believe it is appropriate here:
1. For smc sockets, it actually use IPv4 (AF-INET) or IPv6 (AF-INET6)
address. There is no AF_SMC address at all.
2. Create smc socket in the AF_INET(6) path, which allows us to reuse
the infrastructure of AF_INET(6) path, such as common ebpf hooks.
Otherwise, smc have to implement it again in AF_SMC path.
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com >
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com >
Reviewed-by: Dust Li <dust.li@linux.alibaba.com >
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com >
Tested-by: Wenjia Zhang <wenjia@linux.ibm.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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