By adding batadv_send_skb_to_orig() in send.c, we can remove duplicate
code that looks up the next hop and then calls batadv_send_skb_packet().
Furthermore, this prepares the upcoming new implementation of
fragmentation, which requires the next hop to route packets.
Please note that this doesn't entirely remove the next-hop lookup in
routing.c and unicast.c, since it is used by the current fragmentation
code.
Also note that the next-hop info is removed from debug messages in
translation-table.c, since it is looked up elsewhere.
Signed-off-by: Martin Hundebøll <mar...@hundeboll.net>
---
routing.c | 33 ++++-----------------------
send.c | 20 +++++++++++++++++
send.h | 3 +++
translation-table.c | 65 +++++++++++++----------------------------------------
unicast.c | 9 ++++----
vis.c | 38 +++++++++----------------------
6 files changed, 58 insertions(+), 110 deletions(-)
diff --git a/routing.c b/routing.c
index bc2b88b..5e5d335 100644
--- a/routing.c
+++ b/routing.c
@@ -284,7 +284,6 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv
*bat_priv,
{
struct batadv_hard_iface *primary_if = NULL;
struct batadv_orig_node *orig_node = NULL;
- struct batadv_neigh_node *router = NULL;
struct batadv_icmp_packet_rr *icmp_packet;
int ret = NET_RX_DROP;
@@ -306,10 +305,6 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv
*bat_priv,
if (!orig_node)
goto out;
- router = batadv_orig_node_get_router(orig_node);
- if (!router)
- goto out;
-
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
@@ -321,14 +316,11 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv
*bat_priv,
icmp_packet->msg_type = BATADV_ECHO_REPLY;
icmp_packet->header.ttl = BATADV_TTL;
- batadv_send_skb_packet(skb, router->if_incoming, router->addr);
- ret = NET_RX_SUCCESS;
+ ret = batadv_send_skb_to_orig(orig_node, skb, NULL);
out:
if (primary_if)
batadv_hardif_free_ref(primary_if);
- if (router)
- batadv_neigh_node_free_ref(router);
if (orig_node)
batadv_orig_node_free_ref(orig_node);
return ret;
@@ -339,7 +331,6 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv
*bat_priv,
{
struct batadv_hard_iface *primary_if = NULL;
struct batadv_orig_node *orig_node = NULL;
- struct batadv_neigh_node *router = NULL;
struct batadv_icmp_packet *icmp_packet;
int ret = NET_RX_DROP;
@@ -361,10 +352,6 @@ static int batadv_recv_icmp_ttl_exceeded(struct
batadv_priv *bat_priv,
if (!orig_node)
goto out;
- router = batadv_orig_node_get_router(orig_node);
- if (!router)
- goto out;
-
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
@@ -376,14 +363,11 @@ static int batadv_recv_icmp_ttl_exceeded(struct
batadv_priv *bat_priv,
icmp_packet->msg_type = BATADV_TTL_EXCEEDED;
icmp_packet->header.ttl = BATADV_TTL;
- batadv_send_skb_packet(skb, router->if_incoming, router->addr);
- ret = NET_RX_SUCCESS;
+ ret = batadv_send_skb_to_orig(orig_node, skb, NULL);
out:
if (primary_if)
batadv_hardif_free_ref(primary_if);
- if (router)
- batadv_neigh_node_free_ref(router);
if (orig_node)
batadv_orig_node_free_ref(orig_node);
return ret;
@@ -397,7 +381,6 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
struct batadv_icmp_packet_rr *icmp_packet;
struct ethhdr *ethhdr;
struct batadv_orig_node *orig_node = NULL;
- struct batadv_neigh_node *router = NULL;
int hdr_size = sizeof(struct batadv_icmp_packet);
int ret = NET_RX_DROP;
@@ -446,10 +429,6 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
if (!orig_node)
goto out;
- router = batadv_orig_node_get_router(orig_node);
- if (!router)
- goto out;
-
/* create a copy of the skb, if needed, to modify it. */
if (skb_cow(skb, ETH_HLEN) < 0)
goto out;
@@ -460,12 +439,9 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
icmp_packet->header.ttl--;
/* route it */
- batadv_send_skb_packet(skb, router->if_incoming, router->addr);
- ret = NET_RX_SUCCESS;
+ ret = batadv_send_skb_to_orig(orig_node, skb, recv_if);
out:
- if (router)
- batadv_neigh_node_free_ref(router);
if (orig_node)
batadv_orig_node_free_ref(orig_node);
return ret;
@@ -919,8 +895,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb,
skb->len + ETH_HLEN);
/* route it */
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
- ret = NET_RX_SUCCESS;
+ ret = batadv_send_skb_to_orig(orig_node, skb, recv_if);
out:
if (neigh_node)
diff --git a/send.c b/send.c
index 3b4b2da..c553cfa 100644
--- a/send.c
+++ b/send.c
@@ -77,6 +77,26 @@ send_skb_err:
return NET_XMIT_DROP;
}
+int batadv_send_skb_to_orig(struct batadv_orig_node *orig_node,
+ struct sk_buff *skb,
+ struct batadv_hard_iface *recv_if)
+{
+ struct batadv_priv *bat_priv = orig_node->bat_priv;
+ struct batadv_neigh_node *neigh_node;
+
+ /* batadv_find_router() increases neigh_nodes refcount if found. */
+ neigh_node = batadv_find_router(bat_priv, orig_node, recv_if);
+ if (!neigh_node)
+ return NET_XMIT_DROP;
+
+ /* route it */
+ batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+
+ batadv_neigh_node_free_ref(neigh_node);
+
+ return NET_XMIT_SUCCESS;
+}
+
void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
diff --git a/send.h b/send.h
index 643329b..4f6f5c5 100644
--- a/send.h
+++ b/send.h
@@ -23,6 +23,9 @@
int batadv_send_skb_packet(struct sk_buff *skb,
struct batadv_hard_iface *hard_iface,
const uint8_t *dst_addr);
+int batadv_send_skb_to_orig(struct batadv_orig_node *orig_node,
+ struct sk_buff *skb,
+ struct batadv_hard_iface *recv_if);
void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface);
int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,
const struct sk_buff *skb,
diff --git a/translation-table.c b/translation-table.c
index a438f4b..571f8c8 100644
--- a/translation-table.c
+++ b/translation-table.c
@@ -1446,10 +1446,9 @@ static int batadv_send_tt_request(struct batadv_priv
*bat_priv,
{
struct sk_buff *skb = NULL;
struct batadv_tt_query_packet *tt_request;
- struct batadv_neigh_node *neigh_node = NULL;
struct batadv_hard_iface *primary_if;
struct batadv_tt_req_node *tt_req_node = NULL;
- int ret = 1;
+ int ret = NET_RX_DROP;
size_t tt_req_len;
primary_if = batadv_primary_if_get_selected(bat_priv);
@@ -1484,26 +1483,17 @@ static int batadv_send_tt_request(struct batadv_priv
*bat_priv,
if (full_table)
tt_request->flags |= BATADV_TT_FULL_TABLE;
- neigh_node = batadv_orig_node_get_router(dst_orig_node);
- if (!neigh_node)
- goto out;
-
- batadv_dbg(BATADV_DBG_TT, bat_priv,
- "Sending TT_REQUEST to %pM via %pM [%c]\n",
- dst_orig_node->orig, neigh_node->addr,
- (full_table ? 'F' : '.'));
+ batadv_dbg(BATADV_DBG_TT, bat_priv, "Sending TT_REQUEST to %pM [%c]\n",
+ dst_orig_node->orig, (full_table ? 'F' : '.'));
batadv_inc_counter(bat_priv, BATADV_CNT_TT_REQUEST_TX);
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
- ret = 0;
+ ret = batadv_send_skb_to_orig(dst_orig_node, skb, NULL);
out:
- if (neigh_node)
- batadv_neigh_node_free_ref(neigh_node);
if (primary_if)
batadv_hardif_free_ref(primary_if);
- if (ret)
+ if (ret == NET_RX_DROP)
kfree_skb(skb);
if (ret && tt_req_node) {
spin_lock_bh(&bat_priv->tt_req_list_lock);
@@ -1520,7 +1510,6 @@ batadv_send_other_tt_response(struct batadv_priv
*bat_priv,
{
struct batadv_orig_node *req_dst_orig_node = NULL;
struct batadv_orig_node *res_dst_orig_node = NULL;
- struct batadv_neigh_node *neigh_node = NULL;
struct batadv_hard_iface *primary_if = NULL;
uint8_t orig_ttvn, req_ttvn, ttvn;
int ret = false;
@@ -1545,10 +1534,6 @@ batadv_send_other_tt_response(struct batadv_priv
*bat_priv,
if (!res_dst_orig_node)
goto out;
- neigh_node = batadv_orig_node_get_router(res_dst_orig_node);
- if (!neigh_node)
- goto out;
-
primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if)
goto out;
@@ -1620,13 +1605,12 @@ batadv_send_other_tt_response(struct batadv_priv
*bat_priv,
tt_response->flags |= BATADV_TT_FULL_TABLE;
batadv_dbg(BATADV_DBG_TT, bat_priv,
- "Sending TT_RESPONSE %pM via %pM for %pM (ttvn: %u)\n",
- res_dst_orig_node->orig, neigh_node->addr,
- req_dst_orig_node->orig, req_ttvn);
+ "Sending TT_RESPONSE %pM for %pM (ttvn: %u)\n",
+ res_dst_orig_node->orig, req_dst_orig_node->orig, req_ttvn);
batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+ batadv_send_skb_to_orig(res_dst_orig_node, skb, NULL);
ret = true;
goto out;
@@ -1638,8 +1622,6 @@ out:
batadv_orig_node_free_ref(res_dst_orig_node);
if (req_dst_orig_node)
batadv_orig_node_free_ref(req_dst_orig_node);
- if (neigh_node)
- batadv_neigh_node_free_ref(neigh_node);
if (primary_if)
batadv_hardif_free_ref(primary_if);
if (!ret)
@@ -1653,7 +1635,6 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
struct batadv_tt_query_packet *tt_request)
{
struct batadv_orig_node *orig_node = NULL;
- struct batadv_neigh_node *neigh_node = NULL;
struct batadv_hard_iface *primary_if = NULL;
uint8_t my_ttvn, req_ttvn, ttvn;
int ret = false;
@@ -1677,10 +1658,6 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
if (!orig_node)
goto out;
- neigh_node = batadv_orig_node_get_router(orig_node);
- if (!neigh_node)
- goto out;
-
primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if)
goto out;
@@ -1744,13 +1721,13 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv,
tt_response->flags |= BATADV_TT_FULL_TABLE;
batadv_dbg(BATADV_DBG_TT, bat_priv,
- "Sending TT_RESPONSE to %pM via %pM [%c]\n",
- orig_node->orig, neigh_node->addr,
+ "Sending TT_RESPONSE to %pM [%c]\n",
+ orig_node->orig,
(tt_response->flags & BATADV_TT_FULL_TABLE ? 'F' : '.'));
batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_TX);
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
+ batadv_send_skb_to_orig(orig_node, skb, NULL);
ret = true;
goto out;
@@ -1759,8 +1736,6 @@ unlock:
out:
if (orig_node)
batadv_orig_node_free_ref(orig_node);
- if (neigh_node)
- batadv_neigh_node_free_ref(neigh_node);
if (primary_if)
batadv_hardif_free_ref(primary_if);
if (!ret)
@@ -2028,10 +2003,9 @@ unlock:
static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
struct batadv_orig_node *orig_node)
{
- struct batadv_neigh_node *neigh_node = NULL;
struct sk_buff *skb = NULL;
struct batadv_roam_adv_packet *roam_adv_packet;
- int ret = 1;
+ int ret = NET_RX_DROP;
struct batadv_hard_iface *primary_if;
size_t len = sizeof(*roam_adv_packet);
@@ -2061,23 +2035,16 @@ static void batadv_send_roam_adv(struct batadv_priv
*bat_priv, uint8_t *client,
memcpy(roam_adv_packet->dst, orig_node->orig, ETH_ALEN);
memcpy(roam_adv_packet->client, client, ETH_ALEN);
- neigh_node = batadv_orig_node_get_router(orig_node);
- if (!neigh_node)
- goto out;
-
batadv_dbg(BATADV_DBG_TT, bat_priv,
- "Sending ROAMING_ADV to %pM (client %pM) via %pM\n",
- orig_node->orig, client, neigh_node->addr);
+ "Sending ROAMING_ADV to %pM (client %pM)\n",
+ orig_node->orig, client);
batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_TX);
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
- ret = 0;
+ ret = batadv_send_skb_to_orig(orig_node, skb, NULL);
out:
- if (neigh_node)
- batadv_neigh_node_free_ref(neigh_node);
- if (ret)
+ if (ret == NET_RX_DROP)
kfree_skb(skb);
return;
}
diff --git a/unicast.c b/unicast.c
index 0016464..5568b69 100644
--- a/unicast.c
+++ b/unicast.c
@@ -295,7 +295,7 @@ int batadv_unicast_send_skb(struct sk_buff *skb, struct
batadv_priv *bat_priv)
struct batadv_orig_node *orig_node;
struct batadv_neigh_node *neigh_node;
int data_len = skb->len;
- int ret = 1;
+ int ret = NET_RX_DROP;
unsigned int dev_mtu;
/* get routing information */
@@ -356,16 +356,15 @@ find_router:
goto out;
}
- batadv_send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
- ret = 0;
- goto out;
+
+ ret = batadv_send_skb_to_orig(orig_node, skb, NULL);
out:
if (neigh_node)
batadv_neigh_node_free_ref(neigh_node);
if (orig_node)
batadv_orig_node_free_ref(orig_node);
- if (ret == 1)
+ if (ret == NET_RX_DROP)
kfree_skb(skb);
return ret;
}
diff --git a/vis.c b/vis.c
index 2a2ea06..a3120e4 100644
--- a/vis.c
+++ b/vis.c
@@ -698,16 +698,13 @@ static void batadv_purge_vis_packets(struct batadv_priv
*bat_priv)
static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv,
struct batadv_vis_info *info)
{
- struct batadv_neigh_node *router;
struct batadv_hashtable *hash = bat_priv->orig_hash;
struct hlist_node *node;
struct hlist_head *head;
struct batadv_orig_node *orig_node;
struct batadv_vis_packet *packet;
struct sk_buff *skb;
- struct batadv_hard_iface *hard_iface;
- uint8_t dstaddr[ETH_ALEN];
- uint32_t i;
+ uint32_t i, ret;
packet = (struct batadv_vis_packet *)info->skb_packet->data;
@@ -722,30 +719,21 @@ static void batadv_broadcast_vis_packet(struct
batadv_priv *bat_priv,
if (!(orig_node->flags & BATADV_VIS_SERVER))
continue;
- router = batadv_orig_node_get_router(orig_node);
- if (!router)
- continue;
-
/* don't send it if we already received the packet from
* this node.
*/
if (batadv_recv_list_is_in(bat_priv, &info->recv_list,
- orig_node->orig)) {
- batadv_neigh_node_free_ref(router);
+ orig_node->orig))
continue;
- }
memcpy(packet->target_orig, orig_node->orig, ETH_ALEN);
- hard_iface = router->if_incoming;
- memcpy(dstaddr, router->addr, ETH_ALEN);
-
- batadv_neigh_node_free_ref(router);
-
skb = skb_clone(info->skb_packet, GFP_ATOMIC);
- if (skb)
- batadv_send_skb_packet(skb, hard_iface,
- dstaddr);
+ if (!skb)
+ continue;
+ ret = batadv_send_skb_to_orig(orig_node, skb, NULL);
+ if (ret == NET_RX_DROP)
+ kfree_skb(skb);
}
rcu_read_unlock();
}
@@ -755,7 +743,6 @@ static void batadv_unicast_vis_packet(struct batadv_priv
*bat_priv,
struct batadv_vis_info *info)
{
struct batadv_orig_node *orig_node;
- struct batadv_neigh_node *router = NULL;
struct sk_buff *skb;
struct batadv_vis_packet *packet;
@@ -765,17 +752,14 @@ static void batadv_unicast_vis_packet(struct batadv_priv
*bat_priv,
if (!orig_node)
goto out;
- router = batadv_orig_node_get_router(orig_node);
- if (!router)
+ skb = skb_clone(info->skb_packet, GFP_ATOMIC);
+ if (!skb)
goto out;
- skb = skb_clone(info->skb_packet, GFP_ATOMIC);
- if (skb)
- batadv_send_skb_packet(skb, router->if_incoming, router->addr);
+ if (batadv_send_skb_to_orig(orig_node, skb, NULL) == NET_RX_DROP)
+ kfree_skb(skb);
out:
- if (router)
- batadv_neigh_node_free_ref(router);
if (orig_node)
batadv_orig_node_free_ref(orig_node);
}
--
1.7.11.1
