xiaomi-sm8450/android_kernel_xiaomi_sm8450
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net: add sock_set_reuseaddr

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Add a helper to directly set the SO_REUSEADDR sockopt from kernel space
without going through a fake uaccess.

For this the iscsi target now has to formally depend on inet to avoid
a mostly theoretical compile failure.  For actual operation it already
did depend on having ipv4 or ipv6 support.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2020-05-28 07:12:09 +02:00
committed by David S. Miller
parent 1eba1110f0
commit b58f0e8f38
7 changed files with 19 additions and 34 deletions
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2
drivers/target/iscsi/Kconfig
View File

@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config ISCSI_TARGET
tristate "Linux-iSCSI.org iSCSI Target Mode Stack"
depends on NET
depends on INET
select CRYPTO
select CRYPTO_CRC32C
select CRYPTO_CRC32C_INTEL if X86

9
drivers/target/iscsi/iscsi_target_login.c
View File

@@ -909,14 +909,7 @@ int iscsit_setup_np(
}
}
/* FIXME: Someone please explain why this is endian-safe */
ret = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
(char *)&opt, sizeof(opt));
if (ret < 0) {
pr_err("kernel_setsockopt() for SO_REUSEADDR"
" failed\n");
goto fail;
}
sock_set_reuseaddr(sock->sk);
ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND,
(char *)&opt, sizeof(opt));