From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Date: Fri, 07 Sep 2018 10:49:31 +1000 Subject: [lustre-devel] [PATCH 06/34] lnet: store separate xmit/recv net-interface in each message. In-Reply-To: <153628058697.8267.6056114844033479774.stgit@noble> References: <153628058697.8267.6056114844033479774.stgit@noble> Message-ID: <153628137147.8267.3706504130592682241.stgit@noble> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org Currently we store the net-interface in the peer, but the peer should identify just the network, not the particular interface. To help track which actual interface is used for each message, store them explicitly. This is part of 8cbb8cd3e771e7f7e0f99cafc19fad32770dc015 LU-7734 lnet: Multi-Rail local NI split and includes commit 63c3e5129873 ("LU-7734 lnet: Fix lnet_msg_free()") Signed-off-by: NeilBrown --- .../staging/lustre/include/linux/lnet/lib-types.h | 3 +++ drivers/staging/lustre/lnet/lnet/lib-move.c | 21 ++++++++++++++++++-- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/staging/lustre/include/linux/lnet/lib-types.h b/drivers/staging/lustre/include/linux/lnet/lib-types.h index 5f0d4703bf86..16a493529a46 100644 --- a/drivers/staging/lustre/include/linux/lnet/lib-types.h +++ b/drivers/staging/lustre/include/linux/lnet/lib-types.h @@ -98,6 +98,9 @@ struct lnet_msg { void *msg_private; struct lnet_libmd *msg_md; + /* the NI the message was sent or received over */ + struct lnet_ni *msg_txni; + struct lnet_ni *msg_rxni; unsigned int msg_len; unsigned int msg_wanted; diff --git a/drivers/staging/lustre/lnet/lnet/lib-move.c b/drivers/staging/lustre/lnet/lnet/lib-move.c index 1c874025fa74..b2a52ddcefcb 100644 --- a/drivers/staging/lustre/lnet/lnet/lib-move.c +++ b/drivers/staging/lustre/lnet/lnet/lib-move.c @@ -782,6 +782,7 @@ lnet_return_tx_credits_locked(struct lnet_msg *msg) { struct lnet_peer *txpeer = msg->msg_txpeer; struct lnet_msg *msg2; + struct lnet_ni *txni = msg->msg_txni; if (msg->msg_txcredit) { struct lnet_ni *ni = txpeer->lp_ni; @@ -829,6 +830,11 @@ lnet_return_tx_credits_locked(struct lnet_msg *msg) } } + if (txni != NULL) { + msg->msg_txni = NULL; + lnet_ni_decref_locked(txni, msg->msg_tx_cpt); + } + if (txpeer) { msg->msg_txpeer = NULL; lnet_peer_decref_locked(txpeer); @@ -876,6 +882,7 @@ void lnet_return_rx_credits_locked(struct lnet_msg *msg) { struct lnet_peer *rxpeer = msg->msg_rxpeer; + struct lnet_ni *rxni = msg->msg_rxni; struct lnet_msg *msg2; if (msg->msg_rtrcredit) { @@ -951,6 +958,10 @@ lnet_return_rx_credits_locked(struct lnet_msg *msg) (void)lnet_post_routed_recv_locked(msg2, 1); } } + if (rxni != NULL) { + msg->msg_rxni = NULL; + lnet_ni_decref_locked(rxni, msg->msg_rx_cpt); + } if (rxpeer) { msg->msg_rxpeer = NULL; lnet_peer_decref_locked(rxpeer); @@ -1218,9 +1229,12 @@ lnet_send(lnet_nid_t src_nid, struct lnet_msg *msg, lnet_nid_t rtr_nid) LASSERT(!msg->msg_peertxcredit); LASSERT(!msg->msg_txcredit); - LASSERT(!msg->msg_txpeer); + LASSERT(msg->msg_txpeer == NULL); - msg->msg_txpeer = lp; /* msg takes my ref on lp */ + msg->msg_txpeer = lp; /* msg takes my ref on lp */ + /* set the NI for this message */ + msg->msg_txni = src_ni; + lnet_ni_addref_locked(msg->msg_txni, cpt); rc = lnet_post_send_locked(msg, 0); lnet_net_unlock(cpt); @@ -1818,6 +1832,8 @@ lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr, lnet_nid_t from_nid, return 0; goto drop; } + msg->msg_rxni = ni; + lnet_ni_addref_locked(ni, cpt); if (lnet_isrouter(msg->msg_rxpeer)) { lnet_peer_set_alive(msg->msg_rxpeer); @@ -1934,6 +1950,7 @@ lnet_recv_delayed_msg_list(struct list_head *head) LASSERT(msg->msg_rx_delayed); LASSERT(msg->msg_md); LASSERT(msg->msg_rxpeer); + LASSERT(msg->msg_rxni); LASSERT(msg->msg_hdr.type == LNET_MSG_PUT); CDEBUG(D_NET, "Resuming delayed PUT from %s portal %d match %llu offset %d length %d.\n",