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lwip/0141-Improve-size-of-multicast-specifications.patch
wanfeng 396ce72607 Improve the size of multicast specifications, with a maximum of 16 groups and 32 members per group 
(cherry picked from commit 6e68a85be7dd64edecfd030f699f711e09bbe4ac)
2024-06-28 17:31:53 +08:00

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From 9b98c8f97e88ddc6db3e3e14ad5415ff780d381a Mon Sep 17 00:00:00 2001
From: wanfeng <wanfeng@kylinos.cn>
Date: Thu, 27 Jun 2024 09:40:41 +0800
Subject: [PATCH] Improve the size of multicast specifications, with a maximum
of 16 groups and 32 members per group
---
src/core/ipv4/igmp.c | 11 ++-
src/core/ipv6/mld6.c | 6 +-
src/core/mcast.c | 165 +++++++++++++++++++++++++--------------
src/include/lwip/mcast.h | 8 +-
src/include/lwipopts.h | 1 +
5 files changed, 128 insertions(+), 63 deletions(-)
diff --git a/src/core/ipv4/igmp.c b/src/core/ipv4/igmp.c
index 2567a41..af298be 100644
--- a/src/core/ipv4/igmp.c
+++ b/src/core/ipv4/igmp.c
@@ -449,8 +449,8 @@ igmp_input(struct pbuf *p, struct netif *inp, const ip4_addr_t *dest)
LWIP_ASSERT("igmp_v3_query packet source address array not aligned!", !((mem_ptr_t)src_buf & 0x3));
ip4_addr_t igmp_v3_group_address;
memcpy(&igmp_v3_group_address, &igmp_v3->igmp_v3_group_address, sizeof(igmp_v3_group_address));
- if (mcast_ip4_filter_interest(inp, (const ip4_addr_t *)&igmp_v3_group_address, src_buf, src_cnt)) {
- /* We interest! */
+ if (mcast_ip4_filter_interest(inp, (const ip4_addr_t *)&igmp_v3_group_address, src_buf, src_cnt)) {
+ /* We interest! */
igmp_v3_delaying_member(group, igmp_v3->igmp_v3_maxresp);
}
@@ -463,6 +463,7 @@ igmp_input(struct pbuf *p, struct netif *inp, const ip4_addr_t *dest)
}
}
}
+ break;
}
#endif /* LWIP_IGMP_V3 */
/* IGMP_MEMB_QUERY to the "all systems" address ? */
@@ -617,13 +618,14 @@ igmp_joingroup_netif(struct netif *netif, const ip4_addr_t *groupaddr)
}
IGMP_STATS_INC(igmp.tx_join);
+#if !LWIP_IGMP_V3
igmp_send(netif, group, IGMP_V2_MEMB_REPORT);
igmp_start_timer(group, IGMP_JOIN_DELAYING_MEMBER_TMR);
/* Need to work out where this timer comes from */
group->group_state = IGMP_GROUP_DELAYING_MEMBER;
-
+#endif
#if LWIP_IGMP_V3
igmp_v3_send(netif, group, IGMP_V3_MEMB_REPORT);
@@ -715,16 +717,19 @@ igmp_leavegroup_netif(struct netif *netif, const ip4_addr_t *groupaddr)
/* Remove the group from the list */
igmp_remove_group(netif, group);
+#if !LWIP_IGMP_V3
/* If we are the last reporter for this group */
if (group->last_reporter_flag) {
LWIP_DEBUGF(IGMP_DEBUG, ("igmp_leavegroup_netif: sending leaving group\n"));
IGMP_STATS_INC(igmp.tx_leave);
igmp_send(netif, group, IGMP_LEAVE_GROUP);
}
+#endif
#if LWIP_IGMP_V3
/* If we are the last reporter for this group */
if (group->v3_last_reporter_flag) {
+ IGMP_STATS_INC(igmp.tx_leave);
igmp_v3_send(netif, group, IGMP_LEAVE_GROUP);
}
#endif /* LWIP_IGMP_V3 */
diff --git a/src/core/ipv6/mld6.c b/src/core/ipv6/mld6.c
index 29c45bc..3aecb35 100644
--- a/src/core/ipv6/mld6.c
+++ b/src/core/ipv6/mld6.c
@@ -313,7 +313,7 @@ mld6_input(struct pbuf *p, struct netif *inp)
}
}
}
-
+ break;
}
#endif
/* Is it a general query? */
@@ -451,8 +451,10 @@ mld6_joingroup_netif(struct netif *netif, const ip6_addr_t *groupaddr)
/* Report our membership. */
MLD6_STATS_INC(mld6.tx_report);
+#if !LWIP_IPV6_MLD_V2
mld6_send(netif, group, ICMP6_TYPE_MLR);
mld6_delayed_report(group, MLD6_JOIN_DELAYING_MEMBER_TMR_MS);
+#endif
#if LWIP_IPV6_MLD_V2
mld6_v2_send(netif, group, ICMP6_TYPE_MLR2);
mld6_v2_delayed_report(group, MLD6_JOIN_DELAYING_MEMBER_TMR_MS);
@@ -536,10 +538,12 @@ mld6_leavegroup_netif(struct netif *netif, const ip6_addr_t *groupaddr)
mld6_remove_group(netif, group);
/* If we are the last reporter for this group */
+#if !LWIP_IPV6_MLD_V2
if (group->last_reporter_flag) {
MLD6_STATS_INC(mld6.tx_leave);
mld6_send(netif, group, ICMP6_TYPE_MLD);
}
+#endif
#if LWIP_IPV6_MLD_V2
/* If we are the last reporter for this group */
if (group->v2_last_reporter_flag) {
diff --git a/src/core/mcast.c b/src/core/mcast.c
index fa46f10..0df6373 100644
--- a/src/core/mcast.c
+++ b/src/core/mcast.c
@@ -449,6 +449,81 @@ mcast_ip6_filter_interest(struct netif *netif, const ip6_addr_t *multi_addr, con
#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
#if (LWIP_IPV4 && LWIP_IGMP) || (LWIP_IPV6 && LWIP_IPV6_MLD)
+
+#if (LWIP_IPV4 && LWIP_IGMP)
+err_t
+mcast_mc_new_src(struct ip4_mc *mc, const ip_addr_t *src_addr)
+{
+ struct igmp_src *src;
+ if (mc->num_src >= LWIP_MCAST_SRC_TBL_SIZE) {
+ return ERR_MEM;
+ }
+ src = (struct igmp_src *)mem_malloc(sizeof(struct igmp_src));
+ if (src == NULL) {
+ return ERR_MEM; /* no memory */
+ }
+ ip4_addr_set(&src->src_addr, ip_2_ip4(src_addr));
+ src->next = mc->src;
+ mc->src = src;
+ mc->num_src++;
+ return ERR_OK;
+}
+
+err_t
+mcast_mc_free_src(struct ip4_mc *mc, struct igmp_src *src, struct igmp_src *src_prev)
+{
+ if (src == NULL) {
+ return ERR_OK;
+ }
+ if (src_prev) {
+ src_prev->next = src->next;
+ } else {
+ mc->src = src->next;
+ }
+ mem_free(src);
+ if (mc->num_src > 0)
+ mc->num_src--;
+ return ERR_OK;
+}
+#endif
+
+#if (LWIP_IPV6 && LWIP_IPV6_MLD)
+err_t
+mcast_mc_new_ipv6_src(struct ip6_mc *mc, const ip_addr_t *src_addr)
+{
+ struct mld6_src *src;
+ if (mc->num_src >= LWIP_MCAST_SRC_TBL_SIZE) {
+ return ERR_MEM;
+ }
+ src = (struct mld6_src *)mem_malloc(sizeof(struct mld6_src));
+ if (src == NULL) {
+ return ERR_MEM; /* no memory */
+ }
+ ip6_addr_set(&src->src_addr, ip_2_ip6(src_addr));
+ src->next = mc->src;
+ mc->src = src;
+ mc->num_src++;
+ return ERR_OK;
+}
+
+err_t
+mcast_mc_free_ipv6_src(struct ip6_mc *mc, struct mld6_src *src, struct mld6_src *src_prev)
+{
+ if (src == NULL) {
+ return ERR_OK;
+ }
+ if (src_prev) {
+ src_prev->next = src->next;
+ } else {
+ mc->src = src->next;
+ }
+ mem_free(src);
+ if (mc->num_src > 0)
+ mc->num_src--;
+ return ERR_OK;
+}
+#endif
+
/** Join a multicast group (Can with a source specified)
*
* @param ipmc multicast filter control block
@@ -480,6 +555,7 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
if (IP_IS_V4(multi_addr)) {
struct ip4_mc *mc;
struct igmp_src *src;
+ err_t err;
mc = mcast_ip4_mc_find(ipmc, netif, ip_2_ip4(multi_addr), NULL);
if (mc) {
@@ -492,13 +568,9 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
return ERR_ALREADY; /* already in source list */
}
- src = (struct igmp_src *)mem_malloc(sizeof(struct igmp_src));
- if (src == NULL) {
+ if (mcast_mc_new_src(mc, src_addr) != ERR_OK) {
return ERR_MEM; /* no memory */
}
- ip4_addr_set(&src->src_addr, ip_2_ip4(src_addr));
- src->next = mc->src;
- mc->src = src;
mc->fmode = MCAST_INCLUDE; /* change to include mode */
IP4_MC_TRIGGER_CALL(netif, ip_2_ip4(multi_addr)); /* trigger a report */
return ERR_OK;
@@ -511,20 +583,19 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
igmp_leavegroup_netif(netif, ip_2_ip4(multi_addr));
return ERR_MEM; /* no memory */
}
+ mc->num_src = 0;
+ mc->src = NULL;
+ mc->if_idx = netif_get_index(netif);
ip4_addr_set(&mc->if_addr, netif_ip4_addr(netif));
ip4_addr_set(&mc->multi_addr, ip_2_ip4(multi_addr));
if (src_addr) { /* have a source specified */
mc->fmode = MCAST_INCLUDE;
- src = (struct igmp_src *)mem_malloc(sizeof(struct igmp_src));
- if (src == NULL) {
+ if (mcast_mc_new_src(mc, src_addr) != ERR_OK) {
+ igmp_leavegroup_netif(netif, ip_2_ip4(multi_addr));
mem_free(mc);
return ERR_MEM; /* no memory */
}
- ip4_addr_set(&src->src_addr, ip_2_ip4(src_addr));
- src->next = NULL;
- mc->src = src;
-
} else {
mc->fmode = MCAST_EXCLUDE; /* no source specified */
mc->src = NULL;
@@ -532,13 +603,19 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
mc->next = ipmc->mc4;
ipmc->mc4 = mc;
- igmp_joingroup_netif(netif, ip_2_ip4(multi_addr));
+ err = igmp_joingroup_netif(netif, ip_2_ip4(multi_addr));
+ if (err != ERR_OK) {
+ ipmc->mc4 = mc->next;
+ mem_free(mc);
+ }
+ return err;
} else
#endif /* LWIP_IPV4 && LWIP_IGMP */
{
#if LWIP_IPV6 && LWIP_IPV6_MLD
struct ip6_mc *mc;
struct mld6_src *src;
+ err_t err;
mc = mcast_ip6_mc_find(ipmc, netif, ip_2_ip6(multi_addr), NULL);
if (mc) {
@@ -551,13 +628,9 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
return ERR_ALREADY; /* already in source list */
}
- src = (struct mld6_src *)mem_malloc(sizeof(struct mld6_src));
- if (src == NULL) {
+ if (mcast_mc_new_ipv6_src(mc, src_addr) != ERR_OK) {
return ERR_MEM; /* no memory */
}
- ip6_addr_set(&src->src_addr, ip_2_ip6(src_addr));
- src->next = mc->src;
- mc->src = src;
mc->fmode = MCAST_INCLUDE; /* change to include mode */
IP6_MC_TRIGGER_CALL(netif, ip_2_ip6(multi_addr)); /* trigger a report */
return ERR_OK;
@@ -570,21 +643,18 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
mld6_leavegroup_netif(netif, ip_2_ip6(multi_addr));
return ERR_MEM; /* no memory */
}
+ mc->num_src = 0;
+ mc->src = NULL;
mc->if_idx = netif_get_index(netif);
ip6_addr_set(&mc->multi_addr, ip_2_ip6(multi_addr));
if (src_addr) {
mc->fmode = MCAST_INCLUDE;
- src = (struct mld6_src *)mem_malloc(sizeof(struct mld6_src));
- if (src == NULL) {
+ if (mcast_mc_new_ipv6_src(mc, src_addr) != ERR_OK) {
mld6_leavegroup_netif(netif, ip_2_ip6(multi_addr));
mem_free(mc);
return ERR_MEM; /* no memory */
}
- ip6_addr_set(&src->src_addr, ip_2_ip6(src_addr));
- src->next = NULL;
- mc->src = src;
-
} else {
mc->fmode = MCAST_EXCLUDE; /* no source specified */
mc->src = NULL;
@@ -592,7 +662,12 @@ mcast_join_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *multi
mc->next = ipmc->mc6;
ipmc->mc6 = mc;
- mld6_joingroup_netif(netif, ip_2_ip6(multi_addr));
+ err = mld6_joingroup_netif(netif, ip_2_ip6(multi_addr));
+ if (err != ERR_OK) {
+ ipmc->mc6 = mc->next;
+ mem_free(mc);
+ }
+ return err;
#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
}
return ERR_OK;
@@ -673,12 +748,7 @@ mcast_leave_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mult
src = mcast_ip4_mc_src_find(mc, ip_2_ip4(src_addr), &src_prev);
if (src) {
- if (src_prev) {
- src_prev->next = src->next;
- } else {
- mc->src = src->next;
- }
- mem_free(src);
+ mcast_mc_free_src(mc, src, src_prev);
} else {
return ERR_VAL;
}
@@ -688,6 +758,7 @@ mcast_leave_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mult
}
} else { /* we want drop this group */
mcast_ip4_mc_src_remove(mc->src);
+ mc->num_src = 0;
}
igmp_leavegroup_netif(netif, ip_2_ip4(multi_addr));
@@ -718,12 +789,7 @@ mcast_leave_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mult
src = mcast_ip6_mc_src_find(mc, ip_2_ip6(src_addr), &src_prev);
if (src) {
- if (src_prev) {
- src_prev->next = src->next;
- } else {
- mc->src = src->next;
- }
- mem_free(src);
+ mcast_mc_free_ipv6_src(mc, src, src_prev);
} else {
return ERR_VAL;
}
@@ -733,6 +799,7 @@ mcast_leave_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mult
}
} else { /* we want drop this group */
mcast_ip6_mc_src_remove(mc->src);
+ mc->num_src = 0;
}
mld6_leavegroup_netif(netif, ip_2_ip6(multi_addr));
@@ -818,13 +885,9 @@ mcast_block_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mult
src = mcast_ip4_mc_src_find(mc, ip_2_ip4(blk_addr), NULL);
if (src == NULL) {
- src = (struct igmp_src *)mem_malloc(sizeof(struct igmp_src));
- if (src == NULL) {
+ if (mcast_mc_new_src(mc, blk_addr) != ERR_OK) {
return ERR_MEM;
}
- ip4_addr_set(&src->src_addr, ip_2_ip4(blk_addr));
- src->next = mc->src;
- mc->src = src;
IP4_MC_TRIGGER_CALL(netif, ip_2_ip4(multi_addr)); /* trigger a report */
}
} else
@@ -844,13 +907,9 @@ mcast_block_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mult
src = mcast_ip6_mc_src_find(mc, ip_2_ip6(blk_addr), NULL);
if (src == NULL) {
- src = (struct mld6_src *)mem_malloc(sizeof(struct mld6_src));
- if (src == NULL) {
+ if (mcast_mc_new_ipv6_src(mc, blk_addr) != ERR_OK) {
return ERR_MEM;
}
- ip6_addr_set(&src->src_addr, ip_2_ip6(blk_addr));
- src->next = mc->src;
- mc->src = src;
IP6_MC_TRIGGER_CALL(netif, ip_2_ip6(multi_addr)); /* trigger a report */
}
#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
@@ -932,12 +991,7 @@ mcast_unblock_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mu
if (src == NULL) {
return ERR_VAL;
}
- if (src_prev) {
- src_prev->next = src->next;
- } else {
- mc->src = src->next;
- }
- mem_free(src);
+ mcast_mc_free_src(mc, src, src_prev);
IP4_MC_TRIGGER_CALL(netif, ip_2_ip4(multi_addr)); /* trigger a report */
} else
#endif /* LWIP_IPV4 && LWIP_IGMP */
@@ -959,12 +1013,7 @@ mcast_unblock_netif(struct ip_mc *ipmc, struct netif *netif, const ip_addr_t *mu
if (src == NULL) {
return ERR_VAL;
}
- if (src_prev) {
- src_prev->next = src->next;
- } else {
- mc->src = src->next;
- }
- mem_free(src);
+ mcast_mc_free_ipv6_src(mc, src, src_prev);
IP6_MC_TRIGGER_CALL(netif, ip_2_ip6(multi_addr)); /* trigger a report */
#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
}
diff --git a/src/include/lwip/mcast.h b/src/include/lwip/mcast.h
index 16a27ae..6067a3c 100644
--- a/src/include/lwip/mcast.h
+++ b/src/include/lwip/mcast.h
@@ -4,7 +4,7 @@
*/
/*
- * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+ * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
@@ -56,12 +56,16 @@
/** the IPv4 multicast filter */
struct ip4_mc {
struct ip4_mc *next;
+ /** the interface index */
+ u8_t if_idx;
/** the interface address */
ip4_addr_t if_addr;
/** the group address */
ip4_addr_t multi_addr;
/** the source address list filter mode 0: EXCLUDE 1: INCLUDE */
u8_t fmode;
+ /** the num of source address**/
+ u8_t num_src;
/** the source address list */
struct igmp_src *src;
};
@@ -84,6 +88,8 @@ struct ip6_mc {
ip6_addr_t multi_addr;
/** the source address list filter mode 0: EXCLUDE 1: INCLUDE */
u8_t fmode;
+ /** the num of source address**/
+ u8_t num_src;
/** the source address list */
struct mld6_src *src;
};
diff --git a/src/include/lwipopts.h b/src/include/lwipopts.h
index cb3154a..44dcddf 100644
--- a/src/include/lwipopts.h
+++ b/src/include/lwipopts.h
@@ -194,6 +194,7 @@
#define MEMP_NUM_UDP_PCB (GAZELLE_MAX_CLIENTS + GAZELLE_RESERVED_CLIENTS)
#define MEMP_NUM_IGMP_GROUP 16
+#define MEMP_NUM_MLD6_GROUP 16
#define DEFAULT_UDP_RECVMBOX_SIZE 4096
--
2.25.1
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