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Message-Id: <20180221113235.46702-4-ubraun@linux.vnet.ibm.com>
Date: Wed, 21 Feb 2018 12:32:33 +0100
From: Ursula Braun <ubraun@...ux.vnet.ibm.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, linux-s390@...r.kernel.org,
jwi@...ux.vnet.ibm.com, schwidefsky@...ibm.com,
heiko.carstens@...ibm.com, raspl@...ux.vnet.ibm.com,
ubraun@...ux.vnet.ibm.com
Subject: [PATCH net-next 3/5] net/smc: move netinfo function to file smc_clc.c
From: Karsten Graul <kgraul@...ux.vnet.ibm.com>
The function smc_netinfo_by_tcpsk() belongs to CLC handling.
Move it to smc_clc.c and rename to smc_clc_netinfo_by_tcpsk.
Signed-off-by: Karsten Graul <kgraul@...ux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@...ux.vnet.ibm.com>
---
net/smc/af_smc.c | 42 +-----------------------------------------
net/smc/smc.h | 2 --
net/smc/smc_clc.c | 44 ++++++++++++++++++++++++++++++++++++++++++--
net/smc/smc_clc.h | 2 ++
4 files changed, 45 insertions(+), 45 deletions(-)
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index b1961a789837..b90cbfdb9916 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -24,7 +24,6 @@
#include <linux/module.h>
#include <linux/socket.h>
-#include <linux/inetdevice.h>
#include <linux/workqueue.h>
#include <linux/in.h>
#include <linux/sched/signal.h>
@@ -273,45 +272,6 @@ static void smc_copy_sock_settings_to_smc(struct smc_sock *smc)
smc_copy_sock_settings(&smc->sk, smc->clcsock->sk, SK_FLAGS_CLC_TO_SMC);
}
-/* determine subnet and mask of internal TCP socket */
-int smc_netinfo_by_tcpsk(struct socket *clcsock,
- __be32 *subnet, u8 *prefix_len)
-{
- struct dst_entry *dst = sk_dst_get(clcsock->sk);
- struct in_device *in_dev;
- struct sockaddr_in addr;
- int rc = -ENOENT;
-
- if (!dst) {
- rc = -ENOTCONN;
- goto out;
- }
- if (!dst->dev) {
- rc = -ENODEV;
- goto out_rel;
- }
-
- /* get address to which the internal TCP socket is bound */
- kernel_getsockname(clcsock, (struct sockaddr *)&addr);
- /* analyze IPv4 specific data of net_device belonging to TCP socket */
- rcu_read_lock();
- in_dev = __in_dev_get_rcu(dst->dev);
- for_ifa(in_dev) {
- if (!inet_ifa_match(addr.sin_addr.s_addr, ifa))
- continue;
- *prefix_len = inet_mask_len(ifa->ifa_mask);
- *subnet = ifa->ifa_address & ifa->ifa_mask;
- rc = 0;
- break;
- } endfor_ifa(in_dev);
- rcu_read_unlock();
-
-out_rel:
- dst_release(dst);
-out:
- return rc;
-}
-
static int smc_clnt_conf_first_link(struct smc_sock *smc)
{
struct smc_link_group *lgr = smc->conn.lgr;
@@ -808,7 +768,7 @@ static void smc_listen_work(struct work_struct *work)
}
/* determine subnet and mask from internal TCP socket */
- rc = smc_netinfo_by_tcpsk(newclcsock, &subnet, &prefix_len);
+ rc = smc_clc_netinfo_by_tcpsk(newclcsock, &subnet, &prefix_len);
if (rc) {
reason_code = SMC_CLC_DECL_CNFERR; /* configuration error */
goto decline_rdma;
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 9518986c97b1..9895c190d146 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -263,8 +263,6 @@ static inline bool using_ipsec(struct smc_sock *smc)
struct smc_clc_msg_local;
-int smc_netinfo_by_tcpsk(struct socket *clcsock, __be32 *subnet,
- u8 *prefix_len);
void smc_conn_free(struct smc_connection *conn);
int smc_conn_create(struct smc_sock *smc, __be32 peer_in_addr,
struct smc_ib_device *smcibdev, u8 ibport,
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index dff318a2d5bf..874c5a75d6dd 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -11,6 +11,7 @@
*/
#include <linux/in.h>
+#include <linux/inetdevice.h>
#include <linux/if_ether.h>
#include <linux/sched/signal.h>
@@ -73,6 +74,45 @@ static bool smc_clc_msg_hdr_valid(struct smc_clc_msg_hdr *clcm)
return true;
}
+/* determine subnet and mask of internal TCP socket */
+int smc_clc_netinfo_by_tcpsk(struct socket *clcsock,
+ __be32 *subnet, u8 *prefix_len)
+{
+ struct dst_entry *dst = sk_dst_get(clcsock->sk);
+ struct in_device *in_dev;
+ struct sockaddr_in addr;
+ int rc = -ENOENT;
+
+ if (!dst) {
+ rc = -ENOTCONN;
+ goto out;
+ }
+ if (!dst->dev) {
+ rc = -ENODEV;
+ goto out_rel;
+ }
+
+ /* get address to which the internal TCP socket is bound */
+ kernel_getsockname(clcsock, (struct sockaddr *)&addr);
+ /* analyze IPv4 specific data of net_device belonging to TCP socket */
+ rcu_read_lock();
+ in_dev = __in_dev_get_rcu(dst->dev);
+ for_ifa(in_dev) {
+ if (!inet_ifa_match(addr.sin_addr.s_addr, ifa))
+ continue;
+ *prefix_len = inet_mask_len(ifa->ifa_mask);
+ *subnet = ifa->ifa_address & ifa->ifa_mask;
+ rc = 0;
+ break;
+ } endfor_ifa(in_dev);
+ rcu_read_unlock();
+
+out_rel:
+ dst_release(dst);
+out:
+ return rc;
+}
+
/* Wait for data on the tcp-socket, analyze received data
* Returns:
* 0 if success and it was not a decline that we received.
@@ -214,8 +254,8 @@ int smc_clc_send_proposal(struct smc_sock *smc,
memset(&pclc_prfx, 0, sizeof(pclc_prfx));
/* determine subnet and mask from internal TCP socket */
- rc = smc_netinfo_by_tcpsk(smc->clcsock, &pclc_prfx.outgoing_subnet,
- &pclc_prfx.prefix_len);
+ rc = smc_clc_netinfo_by_tcpsk(smc->clcsock, &pclc_prfx.outgoing_subnet,
+ &pclc_prfx.prefix_len);
if (rc)
return SMC_CLC_DECL_CNFERR; /* configuration error */
pclc_prfx.ipv6_prefixes_cnt = 0;
diff --git a/net/smc/smc_clc.h b/net/smc/smc_clc.h
index aab3aae2a2ce..a20fc75efb24 100644
--- a/net/smc/smc_clc.h
+++ b/net/smc/smc_clc.h
@@ -121,6 +121,8 @@ smc_clc_proposal_get_prefix(struct smc_clc_msg_proposal *pclc)
((u8 *)pclc + sizeof(*pclc) + ntohs(pclc->iparea_offset));
}
+int smc_clc_netinfo_by_tcpsk(struct socket *clcsock, __be32 *subnet,
+ u8 *prefix_len);
int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
u8 expected_type);
int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info);
--
2.13.5
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