diff options
Diffstat (limited to 'net/sctp/protocol.c')
-rw-r--r-- | net/sctp/protocol.c | 61 |
1 files changed, 51 insertions, 10 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 0ec234b762c2..a6e0818bcff5 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -52,6 +52,8 @@ #include <linux/inetdevice.h> #include <linux/seq_file.h> #include <linux/bootmem.h> +#include <linux/highmem.h> +#include <linux/swap.h> #include <net/net_namespace.h> #include <net/protocol.h> #include <net/ip.h> @@ -64,9 +66,12 @@ /* Global data structures. */ struct sctp_globals sctp_globals __read_mostly; -struct proc_dir_entry *proc_net_sctp; DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly; +#ifdef CONFIG_PROC_FS +struct proc_dir_entry *proc_net_sctp; +#endif + struct idr sctp_assocs_id; DEFINE_SPINLOCK(sctp_assocs_id_lock); @@ -97,6 +102,7 @@ struct sock *sctp_get_ctl_sock(void) /* Set up the proc fs entry for the SCTP protocol. */ static __init int sctp_proc_init(void) { +#ifdef CONFIG_PROC_FS if (!proc_net_sctp) { struct proc_dir_entry *ent; ent = proc_mkdir("sctp", init_net.proc_net); @@ -108,16 +114,32 @@ static __init int sctp_proc_init(void) } if (sctp_snmp_proc_init()) - goto out_nomem; + goto out_snmp_proc_init; if (sctp_eps_proc_init()) - goto out_nomem; + goto out_eps_proc_init; if (sctp_assocs_proc_init()) - goto out_nomem; + goto out_assocs_proc_init; + if (sctp_remaddr_proc_init()) + goto out_remaddr_proc_init; return 0; +out_remaddr_proc_init: + sctp_assocs_proc_exit(); +out_assocs_proc_init: + sctp_eps_proc_exit(); +out_eps_proc_init: + sctp_snmp_proc_exit(); +out_snmp_proc_init: + if (proc_net_sctp) { + proc_net_sctp = NULL; + remove_proc_entry("sctp", init_net.proc_net); + } out_nomem: return -ENOMEM; +#else + return 0; +#endif /* CONFIG_PROC_FS */ } /* Clean up the proc fs entry for the SCTP protocol. @@ -126,14 +148,17 @@ out_nomem: */ static void sctp_proc_exit(void) { +#ifdef CONFIG_PROC_FS sctp_snmp_proc_exit(); sctp_eps_proc_exit(); sctp_assocs_proc_exit(); + sctp_remaddr_proc_exit(); if (proc_net_sctp) { proc_net_sctp = NULL; remove_proc_entry("sctp", init_net.proc_net); } +#endif } /* Private helper to extract ipv4 address and stash them in @@ -358,6 +383,10 @@ static int sctp_v4_addr_valid(union sctp_addr *addr, struct sctp_sock *sp, const struct sk_buff *skb) { + /* IPv4 addresses not allowed */ + if (sp && ipv6_only_sock(sctp_opt2sk(sp))) + return 0; + /* Is this a non-unicast address or a unusable SCTP address? */ if (IS_IPV4_UNUSABLE_ADDRESS(addr->v4.sin_addr.s_addr)) return 0; @@ -381,6 +410,9 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp) !sysctl_ip_nonlocal_bind) return 0; + if (ipv6_only_sock(sctp_opt2sk(sp))) + return 0; + return 1; } @@ -470,11 +502,11 @@ static struct dst_entry *sctp_v4_get_dst(struct sctp_association *asoc, /* Walk through the bind address list and look for a bind * address that matches the source address of the returned dst. */ + sctp_v4_dst_saddr(&dst_saddr, dst, htons(bp->port)); rcu_read_lock(); list_for_each_entry_rcu(laddr, &bp->address_list, list) { if (!laddr->valid || (laddr->state != SCTP_ADDR_SRC)) continue; - sctp_v4_dst_saddr(&dst_saddr, dst, htons(bp->port)); if (sctp_v4_cmp_addr(&dst_saddr, &laddr->a)) goto out_unlock; } @@ -519,7 +551,8 @@ out: /* For v4, the source address is cached in the route entry(dst). So no need * to cache it separately and hence this is an empty routine. */ -static void sctp_v4_get_saddr(struct sctp_association *asoc, +static void sctp_v4_get_saddr(struct sctp_sock *sk, + struct sctp_association *asoc, struct dst_entry *dst, union sctp_addr *daddr, union sctp_addr *saddr) @@ -616,6 +649,11 @@ static void sctp_v4_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr) seq_printf(seq, "%d.%d.%d.%d ", NIPQUAD(addr->v4.sin_addr)); } +static void sctp_v4_ecn_capable(struct sock *sk) +{ + INET_ECN_xmit(sk); +} + /* Event handler for inet address addition/deletion events. * The sctp_local_addr_list needs to be protocted by a spin lock since * multiple notifiers (say IPv4 and IPv6) may be running at the same @@ -630,7 +668,7 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev, struct sctp_sockaddr_entry *temp; int found = 0; - if (dev_net(ifa->ifa_dev->dev) != &init_net) + if (!net_eq(dev_net(ifa->ifa_dev->dev), &init_net)) return NOTIFY_DONE; switch (ev) { @@ -934,6 +972,7 @@ static struct sctp_af sctp_af_inet = { .skb_iif = sctp_v4_skb_iif, .is_ce = sctp_v4_is_ce, .seq_dump_addr = sctp_v4_seq_dump_addr, + .ecn_capable = sctp_v4_ecn_capable, .net_header_len = sizeof(struct iphdr), .sockaddr_len = sizeof(struct sockaddr_in), #ifdef CONFIG_COMPAT @@ -1043,6 +1082,7 @@ SCTP_STATIC __init int sctp_init(void) int status = -EINVAL; unsigned long goal; unsigned long limit; + unsigned long nr_pages; int max_share; int order; @@ -1138,8 +1178,9 @@ SCTP_STATIC __init int sctp_init(void) * Note this initalizes the data in sctpv6_prot too * Unabashedly stolen from tcp_init */ - limit = min(num_physpages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT); - limit = (limit * (num_physpages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11); + nr_pages = totalram_pages - totalhigh_pages; + limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT); + limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11); limit = max(limit, 128UL); sysctl_sctp_mem[0] = limit / 4 * 3; sysctl_sctp_mem[1] = limit; @@ -1149,7 +1190,7 @@ SCTP_STATIC __init int sctp_init(void) limit = (sysctl_sctp_mem[1]) << (PAGE_SHIFT - 7); max_share = min(4UL*1024*1024, limit); - sysctl_sctp_rmem[0] = PAGE_SIZE; /* give each asoc 1 page min */ + sysctl_sctp_rmem[0] = SK_MEM_QUANTUM; /* give each asoc 1 page min */ sysctl_sctp_rmem[1] = (1500 *(sizeof(struct sk_buff) + 1)); sysctl_sctp_rmem[2] = max(sysctl_sctp_rmem[1], max_share); |