diff options
| author | Guvenc Gulce <guvenc@linux.ibm.com> | 2021-06-16 16:52:55 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-16 21:54:02 +0200 |
| commit | e0e4b8fa533858532f1b9ea9c6a4660d09beb37a (patch) | |
| tree | dc04b676e1642f2333f69ad513152c0b999fecaa /net/smc/smc_tx.c | |
| parent | mlxsw: spectrum_router: remove redundant continue statement (diff) | |
| download | linux-e0e4b8fa533858532f1b9ea9c6a4660d09beb37a.tar.xz linux-e0e4b8fa533858532f1b9ea9c6a4660d09beb37a.zip | |
net/smc: Add SMC statistics support
Add the ability to collect SMC statistics information. Per-cpu
variables are used to collect the statistic information for better
performance and for reducing concurrency pitfalls. The code that is
collecting statistic data is implemented in macros to increase code
reuse and readability.
Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_tx.c')
| -rw-r--r-- | net/smc/smc_tx.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/net/smc/smc_tx.c b/net/smc/smc_tx.c index 4532c16bf85e..a043544d715f 100644 --- a/net/smc/smc_tx.c +++ b/net/smc/smc_tx.c @@ -27,6 +27,7 @@ #include "smc_close.h" #include "smc_ism.h" #include "smc_tx.h" +#include "smc_stats.h" #define SMC_TX_WORK_DELAY 0 #define SMC_TX_CORK_DELAY (HZ >> 2) /* 250 ms */ @@ -45,6 +46,8 @@ static void smc_tx_write_space(struct sock *sk) /* similar to sk_stream_write_space */ if (atomic_read(&smc->conn.sndbuf_space) && sock) { + if (test_bit(SOCK_NOSPACE, &sock->flags)) + SMC_STAT_RMB_TX_FULL(!smc->conn.lnk); clear_bit(SOCK_NOSPACE, &sock->flags); rcu_read_lock(); wq = rcu_dereference(sk->sk_wq); @@ -151,6 +154,15 @@ int smc_tx_sendmsg(struct smc_sock *smc, struct msghdr *msg, size_t len) goto out_err; } + if (len > conn->sndbuf_desc->len) + SMC_STAT_RMB_TX_SIZE_SMALL(!conn->lnk); + + if (len > conn->peer_rmbe_size) + SMC_STAT_RMB_TX_PEER_SIZE_SMALL(!conn->lnk); + + if (msg->msg_flags & MSG_OOB) + SMC_STAT_INC(!conn->lnk, urg_data_cnt); + while (msg_data_left(msg)) { if (sk->sk_state == SMC_INIT) return -ENOTCONN; @@ -419,8 +431,10 @@ static int smc_tx_rdma_writes(struct smc_connection *conn, /* destination: RMBE */ /* cf. snd_wnd */ rmbespace = atomic_read(&conn->peer_rmbe_space); - if (rmbespace <= 0) + if (rmbespace <= 0) { + SMC_STAT_RMB_TX_PEER_FULL(!conn->lnk); return 0; + } smc_curs_copy(&prod, &conn->local_tx_ctrl.prod, conn); smc_curs_copy(&cons, &conn->local_rx_ctrl.cons, conn); |