From ca50910185fcce694af0cc194de50d2374a7c7ef Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Mon, 15 Mar 2010 07:58:45 +0000 Subject: tipc: Allow retransmission of cloned buffers Forward port commit fc477e160af086f6e30c3d4fdf5f5c000d29beb5 from git://tipc.cslab.ericsson.net/pub/git/people/allan/tipc.git Origional commit message: Allow retransmission of cloned buffers This patch fixes an issue with TIPC's message retransmission logic that prevented retransmission of clone sk_buffs. Originally intended as a means of avoiding wasted work in retransmitting messages that were still on the driver's outbound queue, it also prevented TIPC from retransmitting messages through other means -- such as the secondary bearer of the broadcast link, or another interface in a set of bonded interfaces. This fix removes existing checks for cloned sk_buffs that prevented such retransmission. Origionally-Signed-off-by: Allan Stephens Signed-off-by: Neil Horman Signed-off-by: David S. Miller --- net/tipc/link.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index 1a7e4665af80..49f2be8622a9 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1553,7 +1553,7 @@ u32 tipc_link_push_packet(struct link *l_ptr) /* Continue retransmission now, if there is anything: */ - if (r_q_size && buf && !skb_cloned(buf)) { + if (r_q_size && buf) { msg_set_ack(buf_msg(buf), mod(l_ptr->next_in_no - 1)); msg_set_bcast_ack(buf_msg(buf), l_ptr->owner->bclink.last_in); if (tipc_bearer_send(l_ptr->b_ptr, buf, &l_ptr->media_addr)) { @@ -1722,15 +1722,16 @@ void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf, dbg("Retransmitting %u in link %x\n", retransmits, l_ptr); if (tipc_bearer_congested(l_ptr->b_ptr, l_ptr)) { - if (!skb_cloned(buf)) { + if (l_ptr->retransm_queue_size == 0) { msg_dbg(msg, ">NO_RETR->BCONG>"); dbg_print_link(l_ptr, " "); l_ptr->retransm_queue_head = msg_seqno(msg); l_ptr->retransm_queue_size = retransmits; - return; } else { - /* Don't retransmit if driver already has the buffer */ + err("Unexpected retransmit on link %s (qsize=%d)\n", + l_ptr->name, l_ptr->retransm_queue_size); } + return; } else { /* Detect repeated retransmit failures on uncongested bearer */ @@ -1745,7 +1746,7 @@ void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf, } } - while (retransmits && (buf != l_ptr->next_out) && buf && !skb_cloned(buf)) { + while (retransmits && (buf != l_ptr->next_out) && buf) { msg = buf_msg(buf); msg_set_ack(msg, mod(l_ptr->next_in_no - 1)); msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in); -- cgit v1.2.3 From a570f095eac34b7439eed2df6728381708c55bdc Mon Sep 17 00:00:00 2001 From: Frans Pop Date: Wed, 24 Mar 2010 07:57:29 +0000 Subject: tipc: remove trailing space in messages Signed-off-by: Frans Pop Cc: Per Liden Cc: Jon Maloy Cc: Allan Stephens Signed-off-by: David S. Miller --- net/tipc/link.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index 49f2be8622a9..c76e82e5f982 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -877,7 +877,7 @@ static void link_state_event(struct link *l_ptr, unsigned event) case TIMEOUT_EVT: dbg_link("TIM "); if (l_ptr->next_in_no != l_ptr->checkpoint) { - dbg_link("-> WW \n"); + dbg_link("-> WW\n"); l_ptr->state = WORKING_WORKING; l_ptr->fsm_msg_cnt = 0; l_ptr->checkpoint = l_ptr->next_in_no; @@ -934,7 +934,7 @@ static void link_state_event(struct link *l_ptr, unsigned event) link_set_timer(l_ptr, cont_intv); break; case RESET_MSG: - dbg_link("RES \n"); + dbg_link("RES\n"); dbg_link(" -> RR\n"); l_ptr->state = RESET_RESET; l_ptr->fsm_msg_cnt = 0; @@ -947,7 +947,7 @@ static void link_state_event(struct link *l_ptr, unsigned event) l_ptr->started = 1; /* fall through */ case TIMEOUT_EVT: - dbg_link("TIM \n"); + dbg_link("TIM\n"); tipc_link_send_proto_msg(l_ptr, RESET_MSG, 0, 0, 0, 0, 0); l_ptr->fsm_msg_cnt++; link_set_timer(l_ptr, cont_intv); @@ -3295,7 +3295,7 @@ static void link_dump_rec_queue(struct link *l_ptr) info("buffer %x invalid\n", crs); return; } - msg_dbg(buf_msg(crs), "In rec queue: \n"); + msg_dbg(buf_msg(crs), "In rec queue:\n"); crs = crs->next; } } -- cgit v1.2.3 From df4ef33716232077564024baf0e5f2c74a295dfd Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 11 May 2010 14:30:03 +0000 Subject: tipc: Eliminate obsolete port's "congested_link" field Eliminate a field of the TIPC port structure that is populated, but never referenced. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/tipc/link.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index c76e82e5f982..0b86f6aef3d8 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -561,7 +561,6 @@ static int link_schedule_port(struct link *l_ptr, u32 origport, u32 sz) goto exit; if (!list_empty(&p_ptr->wait_list)) goto exit; - p_ptr->congested_link = l_ptr; p_ptr->publ.congested = 1; p_ptr->waiting_pkts = 1 + ((sz - 1) / link_max_pkt(l_ptr)); list_add_tail(&p_ptr->wait_list, &l_ptr->waiting_ports); @@ -592,7 +591,6 @@ void tipc_link_wakeup_ports(struct link *l_ptr, int all) if (win <= 0) break; list_del_init(&p_ptr->wait_list); - p_ptr->congested_link = NULL; spin_lock_bh(p_ptr->publ.lock); p_ptr->publ.congested = 0; p_ptr->wakeup(&p_ptr->publ); -- cgit v1.2.3 From b82834e66aabb6e26c2b792a46d44bab346c46fb Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 11 May 2010 14:30:04 +0000 Subject: tipc: Eliminate unused argument in print statement Eliminate an argument in a print statement that has no corresponding format specification. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/tipc/link.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index 0b86f6aef3d8..c95038f42652 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -3328,9 +3328,7 @@ static void link_print(struct link *l_ptr, struct print_buf *buf, if (l_ptr->next_out) tipc_printf(buf, "%u..", msg_seqno(buf_msg(l_ptr->next_out))); - tipc_printf(buf, "%u]", - msg_seqno(buf_msg - (l_ptr->last_out)), l_ptr->out_queue_size); + tipc_printf(buf, "%u]", msg_seqno(buf_msg(l_ptr->last_out))); if ((mod(msg_seqno(buf_msg(l_ptr->last_out)) - msg_seqno(buf_msg(l_ptr->first_out))) != (l_ptr->out_queue_size - 1)) || -- cgit v1.2.3 From 15e979da7c9ddddd55d2eb81e962dbb2aac51ad1 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 11 May 2010 14:30:10 +0000 Subject: tipc: remove abstraction for link_max_pkt This is just a straight return of a field; there is no value in the abstraction of hiding it behind a function. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/tipc/link.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index c95038f42652..441b26a57850 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -232,11 +232,6 @@ static int link_congested(struct link *l_ptr) return (l_ptr->out_queue_size >= l_ptr->queue_limit[0]); } -static u32 link_max_pkt(struct link *l_ptr) -{ - return l_ptr->max_pkt; -} - static void link_init_max_pkt(struct link *l_ptr) { u32 max_pkt; @@ -562,7 +557,7 @@ static int link_schedule_port(struct link *l_ptr, u32 origport, u32 sz) if (!list_empty(&p_ptr->wait_list)) goto exit; p_ptr->publ.congested = 1; - p_ptr->waiting_pkts = 1 + ((sz - 1) / link_max_pkt(l_ptr)); + p_ptr->waiting_pkts = 1 + ((sz - 1) / l_ptr->max_pkt); list_add_tail(&p_ptr->wait_list, &l_ptr->waiting_ports); l_ptr->stats.link_congs++; exit: @@ -1015,7 +1010,7 @@ static int link_bundle_buf(struct link *l_ptr, return 0; if (skb_tailroom(bundler) < (pad + size)) return 0; - if (link_max_pkt(l_ptr) < (to_pos + size)) + if (l_ptr->max_pkt < (to_pos + size)) return 0; skb_put(bundler, pad + size); @@ -1062,7 +1057,7 @@ int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf) u32 queue_size = l_ptr->out_queue_size; u32 imp = msg_tot_importance(msg); u32 queue_limit = l_ptr->queue_limit[imp]; - u32 max_packet = link_max_pkt(l_ptr); + u32 max_packet = l_ptr->max_pkt; msg_set_prevnode(msg, tipc_own_addr); /* If routed message */ @@ -1193,7 +1188,7 @@ static int link_send_buf_fast(struct link *l_ptr, struct sk_buff *buf, int res = msg_data_sz(msg); if (likely(!link_congested(l_ptr))) { - if (likely(msg_size(msg) <= link_max_pkt(l_ptr))) { + if (likely(msg_size(msg) <= l_ptr->max_pkt)) { if (likely(list_empty(&l_ptr->b_ptr->cong_links))) { link_add_to_outqueue(l_ptr, buf, msg); if (likely(tipc_bearer_send(l_ptr->b_ptr, buf, @@ -1210,7 +1205,7 @@ static int link_send_buf_fast(struct link *l_ptr, struct sk_buff *buf, } } else - *used_max_pkt = link_max_pkt(l_ptr); + *used_max_pkt = l_ptr->max_pkt; } return tipc_link_send_buf(l_ptr, buf); /* All other cases */ } @@ -1317,7 +1312,7 @@ exit: * then re-try fast path or fragment the message */ - sender->publ.max_pkt = link_max_pkt(l_ptr); + sender->publ.max_pkt = l_ptr->max_pkt; tipc_node_unlock(node); read_unlock_bh(&tipc_net_lock); @@ -1480,8 +1475,8 @@ error: tipc_node_unlock(node); goto reject; } - if (link_max_pkt(l_ptr) < max_pkt) { - sender->publ.max_pkt = link_max_pkt(l_ptr); + if (l_ptr->max_pkt < max_pkt) { + sender->publ.max_pkt = l_ptr->max_pkt; tipc_node_unlock(node); for (; buf_chain; buf_chain = buf) { buf = buf_chain->next; @@ -2679,7 +2674,7 @@ int tipc_link_send_long_buf(struct link *l_ptr, struct sk_buff *buf) u32 dsz = msg_data_sz(inmsg); unchar *crs = buf->data; u32 rest = insize; - u32 pack_sz = link_max_pkt(l_ptr); + u32 pack_sz = l_ptr->max_pkt; u32 fragm_sz = pack_sz - INT_H_SIZE; u32 fragm_no = 1; u32 destaddr; @@ -3125,7 +3120,7 @@ static int tipc_link_stats(const char *name, char *buf, const u32 buf_size) tipc_printf(&pb, "Link <%s>\n" " %s MTU:%u Priority:%u Tolerance:%u ms" " Window:%u packets\n", - l_ptr->name, status, link_max_pkt(l_ptr), + l_ptr->name, status, l_ptr->max_pkt, l_ptr->priority, l_ptr->tolerance, l_ptr->queue_limit[0]); tipc_printf(&pb, " RX packets:%u fragments:%u/%u bundles:%u/%u\n", l_ptr->next_in_no - l_ptr->stats.recv_info, @@ -3270,7 +3265,7 @@ u32 tipc_link_get_max_pkt(u32 dest, u32 selector) tipc_node_lock(n_ptr); l_ptr = n_ptr->active_links[selector & 1]; if (l_ptr) - res = link_max_pkt(l_ptr); + res = l_ptr->max_pkt; tipc_node_unlock(n_ptr); } read_unlock_bh(&tipc_net_lock); -- cgit v1.2.3 From 01fee256a675f6492fc6945bbb9b59640d8705d4 Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 11 May 2010 14:30:11 +0000 Subject: tipc: Relocate trivial link status functions to header file Rather than live in link.c where they can only be used in that file alone, these helper routines are better served by being in link.h Relocated are the following: link_working_working link_working_unknown link_reset_unknown link_reset_reset link_blocked link_congested Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/tipc/link.c | 30 ------------------------------ 1 file changed, 30 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index 441b26a57850..e8320bf78d5a 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -202,36 +202,6 @@ static unsigned int align(unsigned int i) return (i + 3) & ~3u; } -static int link_working_working(struct link *l_ptr) -{ - return (l_ptr->state == WORKING_WORKING); -} - -static int link_working_unknown(struct link *l_ptr) -{ - return (l_ptr->state == WORKING_UNKNOWN); -} - -static int link_reset_unknown(struct link *l_ptr) -{ - return (l_ptr->state == RESET_UNKNOWN); -} - -static int link_reset_reset(struct link *l_ptr) -{ - return (l_ptr->state == RESET_RESET); -} - -static int link_blocked(struct link *l_ptr) -{ - return (l_ptr->exp_msg_count || l_ptr->blocked); -} - -static int link_congested(struct link *l_ptr) -{ - return (l_ptr->out_queue_size >= l_ptr->queue_limit[0]); -} - static void link_init_max_pkt(struct link *l_ptr) { u32 max_pkt; -- cgit v1.2.3 From c68ca7b72017f8f52e7aed0d2a6ecfaede133b6b Mon Sep 17 00:00:00 2001 From: Allan Stephens Date: Tue, 11 May 2010 14:30:12 +0000 Subject: tipc: add tipc_ prefix to fcns targeted for un-inlining These functions have enough code in them such that they seem like sensible targets for un-inlining. Prior to doing that, this adds the tipc_ prefix to the functions, so that in the event of a panic dump or similar, the subsystem from which the functions come from is immediately clear. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/tipc/link.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'net/tipc/link.c') diff --git a/net/tipc/link.c b/net/tipc/link.c index e8320bf78d5a..a3616b99529b 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -433,7 +433,7 @@ struct link *tipc_link_create(struct bearer *b_ptr, const u32 peer, l_ptr->pmsg = (struct tipc_msg *)&l_ptr->proto_msg; msg = l_ptr->pmsg; - msg_init(msg, LINK_PROTOCOL, RESET_MSG, INT_H_SIZE, l_ptr->addr); + tipc_msg_init(msg, LINK_PROTOCOL, RESET_MSG, INT_H_SIZE, l_ptr->addr); msg_set_size(msg, sizeof(l_ptr->proto_msg)); msg_set_session(msg, (tipc_random & 0xffff)); msg_set_bearer_id(msg, b_ptr->identity); @@ -1025,7 +1025,7 @@ int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf) u32 size = msg_size(msg); u32 dsz = msg_data_sz(msg); u32 queue_size = l_ptr->out_queue_size; - u32 imp = msg_tot_importance(msg); + u32 imp = tipc_msg_tot_importance(msg); u32 queue_limit = l_ptr->queue_limit[imp]; u32 max_packet = l_ptr->max_pkt; @@ -1090,7 +1090,7 @@ int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf) struct tipc_msg bundler_hdr; if (bundler) { - msg_init(&bundler_hdr, MSG_BUNDLER, OPEN_MSG, + tipc_msg_init(&bundler_hdr, MSG_BUNDLER, OPEN_MSG, INT_H_SIZE, l_ptr->addr); skb_copy_to_linear_data(bundler, &bundler_hdr, INT_H_SIZE); @@ -1243,7 +1243,7 @@ again: * (Must not hold any locks while building message.) */ - res = msg_build(hdr, msg_sect, num_sect, sender->publ.max_pkt, + res = tipc_msg_build(hdr, msg_sect, num_sect, sender->publ.max_pkt, !sender->user_port, &buf); read_lock_bh(&tipc_net_lock); @@ -1354,7 +1354,7 @@ again: /* Prepare reusable fragment header: */ msg_dbg(hdr, ">FRAGMENTING>"); - msg_init(&fragm_hdr, MSG_FRAGMENTER, FIRST_FRAGMENT, + tipc_msg_init(&fragm_hdr, MSG_FRAGMENTER, FIRST_FRAGMENT, INT_H_SIZE, msg_destnode(hdr)); msg_set_link_selector(&fragm_hdr, sender->publ.ref); msg_set_size(&fragm_hdr, max_pkt); @@ -1613,7 +1613,7 @@ static void link_reset_all(unsigned long addr) tipc_node_lock(n_ptr); warn("Resetting all links to %s\n", - addr_string_fill(addr_string, n_ptr->addr)); + tipc_addr_string_fill(addr_string, n_ptr->addr)); for (i = 0; i < MAX_BEARERS; i++) { if (n_ptr->links[i]) { @@ -1655,7 +1655,7 @@ static void link_retransmit_failure(struct link *l_ptr, struct sk_buff *buf) n_ptr = l_ptr->owner->next; tipc_node_lock(n_ptr); - addr_string_fill(addr_string, n_ptr->addr); + tipc_addr_string_fill(addr_string, n_ptr->addr); tipc_printf(TIPC_OUTPUT, "Multicast link info for %s\n", addr_string); tipc_printf(TIPC_OUTPUT, "Supported: %d, ", n_ptr->bclink.supported); tipc_printf(TIPC_OUTPUT, "Acked: %u\n", n_ptr->bclink.acked); @@ -2398,7 +2398,7 @@ void tipc_link_changeover(struct link *l_ptr) return; } - msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL, + tipc_msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL, ORIGINAL_MSG, INT_H_SIZE, l_ptr->addr); msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id); msg_set_msgcnt(&tunnel_hdr, msgcount); @@ -2453,7 +2453,7 @@ void tipc_link_send_duplicate(struct link *l_ptr, struct link *tunnel) struct sk_buff *iter; struct tipc_msg tunnel_hdr; - msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL, + tipc_msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL, DUPLICATE_MSG, INT_H_SIZE, l_ptr->addr); msg_set_msgcnt(&tunnel_hdr, l_ptr->out_queue_size); msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id); @@ -2659,7 +2659,7 @@ int tipc_link_send_long_buf(struct link *l_ptr, struct sk_buff *buf) /* Prepare reusable fragment header: */ - msg_init(&fragm_hdr, MSG_FRAGMENTER, FIRST_FRAGMENT, + tipc_msg_init(&fragm_hdr, MSG_FRAGMENTER, FIRST_FRAGMENT, INT_H_SIZE, destaddr); msg_set_link_selector(&fragm_hdr, msg_link_selector(inmsg)); msg_set_long_msgno(&fragm_hdr, mod(l_ptr->long_msg_seq_no++)); -- cgit v1.2.3