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Enable sending and removal of version 0 sending
Affected functions,
ip_vs_sync_buff_create()
ip_vs_sync_conn()
ip_vs_core.c removal of IPv4 check.
Signed-off-by: Hans Schillstrom <hans.schillstrom@xxxxxxxxxxxx>
---
net/netfilter/ipvs/ip_vs_core.c | 5 +-
net/netfilter/ipvs/ip_vs_sync.c | 139 +++++++++++++++++++++++++++++----------
2 files changed, 107 insertions(+), 37 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index e2bb3cd..9c68045 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1537,7 +1537,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int
af)
* encorage the standby servers to update the connections timeout
*/
pkts = atomic_add_return(1, &cp->in_pkts);
- if (af == AF_INET && (ip_vs_sync_state & IP_VS_STATE_MASTER) &&
+ if ((ip_vs_sync_state & IP_VS_STATE_MASTER) &&
cp->protocol == IPPROTO_SCTP) {
if ((cp->state == IP_VS_SCTP_S_ESTABLISHED &&
(pkts % sysctl_ip_vs_sync_threshold[1]
@@ -1552,8 +1552,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int
af)
}
/* Keep this block last: TCP and others with pp->num_states <= 1 */
- else if (af == AF_INET &&
- (ip_vs_sync_state & IP_VS_STATE_MASTER) &&
+ else if ((ip_vs_sync_state & IP_VS_STATE_MASTER) &&
(((cp->protocol != IPPROTO_TCP ||
cp->state == IP_VS_TCP_S_ESTABLISHED) &&
(pkts % sysctl_ip_vs_sync_threshold[1]
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 5aa8e04..00f0fd3 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -247,9 +247,9 @@ struct ip_vs_sync_buff {
unsigned long firstuse;
/* pointers for the message data */
- struct ip_vs_sync_mesg *mesg;
- unsigned char *head;
- unsigned char *end;
+ struct ip_vs_sync_mesg_v2 *mesg;
+ unsigned char *head;
+ unsigned char *end;
};
@@ -300,6 +300,9 @@ static inline struct ip_vs_sync_buff *sb_dequeue(void)
return sb;
}
+/*
+ * Create a new sync buffer for Version 1 proto.
+ */
static inline struct ip_vs_sync_buff * ip_vs_sync_buff_create(void)
{
struct ip_vs_sync_buff *sb;
@@ -311,11 +314,15 @@ static inline struct ip_vs_sync_buff *
ip_vs_sync_buff_create(void)
kfree(sb);
return NULL;
}
- sb->mesg->nr_conns = 0;
+ sb->mesg->reserverd = 0; /* old nr_conns i.e. must be zeo now */
+ sb->mesg->version = SYNC_PROTO_VER;
sb->mesg->syncid = ip_vs_master_syncid;
- sb->mesg->size = 4;
- sb->head = (unsigned char *)sb->mesg + 4;
+ sb->mesg->size = sizeof(struct ip_vs_sync_mesg_v2);
+ sb->mesg->nr_conns = 0;
+ sb->mesg->spare = 0;
+ sb->head = (unsigned char *)sb->mesg + sizeof(struct
ip_vs_sync_mesg_v2);
sb->end = (unsigned char *)sb->mesg + sync_send_mesg_maxlen;
+
sb->firstuse = jiffies;
return sb;
}
@@ -360,14 +367,51 @@ get_curr_sync_buff(unsigned long time)
/*
* Add an ip_vs_conn information into the current sync_buff.
* Called by ip_vs_in.
+ * Sending Version 1 messages
*/
void ip_vs_sync_conn(struct ip_vs_conn *cp)
{
- struct ip_vs_sync_mesg *m;
- struct ip_vs_sync_conn_v0 *s;
- int len;
+ struct ip_vs_sync_mesg_v2 *m;
+ union ip_vs_sync_conn *s;
+ char *p;
+ int len, pe_name_len = 0;
+
+ /* Sanity checks */
+ if (cp->pe_data_len && (!cp->pe_data || !cp->dest)) {
+ IP_VS_ERR_RL("connection pe_data invalid\n");
+ return;
+ }
+ /* Add space for terminating \0 */
+ if (cp->pe_data_len && cp->dest->svc && cp->dest->svc->pe
+ && cp->dest->svc->pe->name )
+ pe_name_len = strnlen(cp->dest->svc->pe->name,
+ IP_VS_PENAME_MAXLEN) + 1;
spin_lock(&curr_sb_lock);
+#ifdef CONFIG_IP_VS_IPV6
+ /* Assumption,if not configured for IPv6 no packets should enter here */
+ if (cp->af == AF_INET6)
+ len = sizeof(struct ip_vs_sync_v6);
+ else
+#endif
+ len = sizeof(struct ip_vs_sync_v4);
+
+ if (cp->flags & IP_VS_CONN_F_SEQ_MASK)
+ len += sizeof(struct ip_vs_sync_conn_options) + 2;
+
+ /* 32 bit alignment */
+ if (cp->pe_data_len)
+ len += cp->pe_data_len + 2; /* + Option field */
+ if(pe_name_len)
+ len += pe_name_len + 2;
+ len = (len+3) & 0xffc; /* Final 32 bit alignment */
+
+ /* check if there is a space for this one */
+ if (curr_sb && (curr_sb->head+len > curr_sb->end) ) {
+ sb_queue_tail(curr_sb);
+ curr_sb = NULL;
+ }
+
if (!curr_sb) {
if (!(curr_sb=ip_vs_sync_buff_create())) {
spin_unlock(&curr_sb_lock);
@@ -376,36 +420,63 @@ void ip_vs_sync_conn(struct ip_vs_conn *cp)
}
}
- len = (cp->flags & IP_VS_CONN_F_SEQ_MASK) ? FULL_CONN_SIZE :
- SIMPLE_CONN_SIZE;
+
m = curr_sb->mesg;
- s = (struct ip_vs_sync_conn_v0 *)curr_sb->head;
+ s = (union ip_vs_sync_conn *)curr_sb->head;
+ p = (char *)s;
+ /* Set message type */
+ s->v4.type = (cp->af == AF_INET6 ? STYPE_INET6 : 0 );
/* copy members */
- s->protocol = cp->protocol;
- s->cport = cp->cport;
- s->vport = cp->vport;
- s->dport = cp->dport;
- s->caddr = cp->caddr.ip;
- s->vaddr = cp->vaddr.ip;
- s->daddr = cp->daddr.ip;
- s->flags = htons(cp->flags & ~IP_VS_CONN_F_HASHED);
- s->state = htons(cp->state);
- if (cp->flags & IP_VS_CONN_F_SEQ_MASK) {
- struct ip_vs_sync_conn_options *opt =
- (struct ip_vs_sync_conn_options *)&s[1];
- memcpy(opt, &cp->in_seq, sizeof(*opt));
- }
-
+ s->v4.ver_size = htons(len & SVER_MASK); /* Version=0 */
+ s->v4.flags = htonl(cp->flags & ~IP_VS_CONN_F_HASHED);
+ s->v4.state = htons(cp->state);
+ s->v4.protocol = cp->protocol;
+ s->v4.cport = cp->cport;
+ s->v4.vport = cp->vport;
+ s->v4.dport = cp->dport;
+ s->v4.fwmark = htonl(cp->fwmark);
+ s->v4.timeout = htonl(cp->timeout / HZ);
m->nr_conns++;
- m->size += len;
- curr_sb->head += len;
- /* check if there is a space for next one */
- if (curr_sb->head+FULL_CONN_SIZE > curr_sb->end) {
- sb_queue_tail(curr_sb);
- curr_sb = NULL;
+#ifdef CONFIG_IP_VS_IPV6
+ if (cp->af == AF_INET6 ) {
+ p += sizeof(struct ip_vs_sync_v6);
+ ipv6_addr_copy(&s->v6.caddr, &cp->caddr.in6);
+ ipv6_addr_copy(&s->v6.vaddr, &cp->vaddr.in6);
+ ipv6_addr_copy(&s->v6.daddr, &cp->daddr.in6);
+ } else
+#endif
+ {
+ p += sizeof(struct ip_vs_sync_v4); /* options ptr */
+ s->v4.caddr = cp->caddr.ip;
+ s->v4.vaddr = cp->vaddr.ip;
+ s->v4.daddr = cp->daddr.ip;
+ }
+ if (cp->flags & IP_VS_CONN_F_SEQ_MASK) {
+ *(p++) = IPVS_OPT_SEQ_DATA;
+ *(p++) = sizeof(struct ip_vs_sync_conn_options);
+ memcpy(p, &cp->in_seq,
+ sizeof(struct ip_vs_sync_conn_options));
+ p += sizeof(struct ip_vs_sync_conn_options);
}
+ /* Handle pe data */
+ if (cp->pe_data_len && cp->pe_data) {
+ *(p++) = IPVS_OPT_PE_DATA;
+ *(p++) = cp->pe_data_len;
+ memcpy(p, cp->pe_data,cp->pe_data_len);
+ p += cp->pe_data_len;
+ if (pe_name_len) {
+ /* Add PE_NAME */
+ *(p++) = IPVS_OPT_PE_NAME;
+ *(p++) = pe_name_len;
+ memcpy(p, cp->dest->svc->pe->name, pe_name_len);
+ p[pe_name_len-1] = 0; /* Make sure \0 is there */
+ }
+ }
+ m->size += len;
+ curr_sb->head += len;
+
spin_unlock(&curr_sb_lock);
/* synchronize its controller if it has */
@@ -1077,7 +1148,7 @@ ip_vs_send_async(struct socket *sock, const char *buffer,
const size_t length)
}
static void
-ip_vs_send_sync_msg(struct socket *sock, struct ip_vs_sync_mesg *msg)
+ip_vs_send_sync_msg(struct socket *sock, struct ip_vs_sync_mesg_v2 *msg)
{
int msize;
--
1.7.0.1
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