diff options
Diffstat (limited to 'net/ipv4/igmp.c')
| -rw-r--r-- | net/ipv4/igmp.c | 45 |
1 files changed, 20 insertions, 25 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index fb70e3ecc3e4..666cf364df86 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -112,17 +112,17 @@ #ifdef CONFIG_IP_MULTICAST /* Parameter names and values are taken from igmp-v2-06 draft */ -#define IGMP_V1_Router_Present_Timeout (400*HZ) -#define IGMP_V2_Router_Present_Timeout (400*HZ) -#define IGMP_V2_Unsolicited_Report_Interval (10*HZ) -#define IGMP_V3_Unsolicited_Report_Interval (1*HZ) -#define IGMP_Query_Response_Interval (10*HZ) -#define IGMP_Query_Robustness_Variable 2 +#define IGMP_V1_ROUTER_PRESENT_TIMEOUT (400*HZ) +#define IGMP_V2_ROUTER_PRESENT_TIMEOUT (400*HZ) +#define IGMP_V2_UNSOLICITED_REPORT_INTERVAL (10*HZ) +#define IGMP_V3_UNSOLICITED_REPORT_INTERVAL (1*HZ) +#define IGMP_QUERY_RESPONSE_INTERVAL (10*HZ) +#define IGMP_QUERY_ROBUSTNESS_VARIABLE 2 -#define IGMP_Initial_Report_Delay (1) +#define IGMP_INITIAL_REPORT_DELAY (1) -/* IGMP_Initial_Report_Delay is not from IGMP specs! +/* IGMP_INITIAL_REPORT_DELAY is not from IGMP specs! * IGMP specs require to report membership immediately after * joining a group, but we delay the first report by a * small interval. It seems more natural and still does not @@ -318,9 +318,7 @@ igmp_scount(struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted) return scount; } -#define igmp_skb_size(skb) (*(unsigned int *)((skb)->cb)) - -static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) +static struct sk_buff *igmpv3_newpack(struct net_device *dev, unsigned int mtu) { struct sk_buff *skb; struct rtable *rt; @@ -330,6 +328,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) struct flowi4 fl4; int hlen = LL_RESERVED_SPACE(dev); int tlen = dev->needed_tailroom; + unsigned int size = mtu; while (1) { skb = alloc_skb(size + hlen + tlen, @@ -341,7 +340,6 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) return NULL; } skb->priority = TC_PRIO_CONTROL; - igmp_skb_size(skb) = size; rt = ip_route_output_ports(net, &fl4, NULL, IGMPV3_ALL_MCR, 0, 0, 0, @@ -354,6 +352,8 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) skb_dst_set(skb, &rt->dst); skb->dev = dev; + skb->reserved_tailroom = skb_end_offset(skb) - + min(mtu, skb_end_offset(skb)); skb_reserve(skb, hlen); skb_reset_network_header(skb); @@ -423,8 +423,7 @@ static struct sk_buff *add_grhead(struct sk_buff *skb, struct ip_mc_list *pmc, return skb; } -#define AVAILABLE(skb) ((skb) ? ((skb)->dev ? igmp_skb_size(skb) - (skb)->len : \ - skb_tailroom(skb)) : 0) +#define AVAILABLE(skb) ((skb) ? skb_availroom(skb) : 0) static struct sk_buff *add_grec(struct sk_buff *skb, struct ip_mc_list *pmc, int type, int gdeleted, int sdeleted) @@ -879,15 +878,15 @@ static bool igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, if (ih->code == 0) { /* Alas, old v1 router presents here. */ - max_delay = IGMP_Query_Response_Interval; + max_delay = IGMP_QUERY_RESPONSE_INTERVAL; in_dev->mr_v1_seen = jiffies + - IGMP_V1_Router_Present_Timeout; + IGMP_V1_ROUTER_PRESENT_TIMEOUT; group = 0; } else { /* v2 router present */ max_delay = ih->code*(HZ/IGMP_TIMER_SCALE); in_dev->mr_v2_seen = jiffies + - IGMP_V2_Router_Present_Timeout; + IGMP_V2_ROUTER_PRESENT_TIMEOUT; } /* cancel the interface change timer */ in_dev->mr_ifc_count = 0; @@ -899,7 +898,7 @@ static bool igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, return true; /* ignore bogus packet; freed by caller */ } else if (IGMP_V1_SEEN(in_dev)) { /* This is a v3 query with v1 queriers present */ - max_delay = IGMP_Query_Response_Interval; + max_delay = IGMP_QUERY_RESPONSE_INTERVAL; group = 0; } else if (IGMP_V2_SEEN(in_dev)) { /* this is a v3 query with v2 queriers present; @@ -1218,7 +1217,7 @@ static void igmp_group_added(struct ip_mc_list *im) return; if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) { spin_lock_bh(&im->lock); - igmp_start_timer(im, IGMP_Initial_Report_Delay); + igmp_start_timer(im, IGMP_INITIAL_REPORT_DELAY); spin_unlock_bh(&im->lock); return; } @@ -1541,7 +1540,7 @@ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) int sysctl_igmp_max_memberships __read_mostly = IP_MAX_MEMBERSHIPS; int sysctl_igmp_max_msf __read_mostly = IP_MAX_MSF; #ifdef CONFIG_IP_MULTICAST -int sysctl_igmp_qrv __read_mostly = IGMP_Query_Robustness_Variable; +int sysctl_igmp_qrv __read_mostly = IGMP_QUERY_ROBUSTNESS_VARIABLE; #endif static int ip_mc_del1_src(struct ip_mc_list *pmc, int sfmode, @@ -2687,11 +2686,7 @@ static int igmp_mcf_seq_show(struct seq_file *seq, void *v) struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq); if (v == SEQ_START_TOKEN) { - seq_printf(seq, - "%3s %6s " - "%10s %10s %6s %6s\n", "Idx", - "Device", "MCA", - "SRC", "INC", "EXC"); + seq_puts(seq, "Idx Device MCA SRC INC EXC\n"); } else { seq_printf(seq, "%3d %6.6s 0x%08x " |