From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/net/hsr/hsr_forward.c | 455 ++++++++++++++++++++++++++++++++++++++++----------------
1 files changed, 324 insertions(+), 131 deletions(-)
diff --git a/kernel/net/hsr/hsr_forward.c b/kernel/net/hsr/hsr_forward.c
index 04b5450..2a02cb2 100644
--- a/kernel/net/hsr/hsr_forward.c
+++ b/kernel/net/hsr/hsr_forward.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/* Copyright 2011-2014 Autronica Fire and Security AS
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
*
* Author(s):
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * Frame router for HSR and PRP.
*/
#include "hsr_forward.h"
@@ -17,21 +15,7 @@
#include "hsr_main.h"
#include "hsr_framereg.h"
-
struct hsr_node;
-
-struct hsr_frame_info {
- struct sk_buff *skb_std;
- struct sk_buff *skb_hsr;
- struct hsr_port *port_rcv;
- struct hsr_node *node_src;
- u16 sequence_nr;
- bool is_supervision;
- bool is_vlan;
- bool is_local_dest;
- bool is_local_exclusive;
-};
-
/* The uses I can see for these HSR supervision frames are:
* 1) Use the frames that are sent after node initialization ("HSR_TLV.Type =
@@ -50,48 +34,49 @@
*/
static bool is_supervision_frame(struct hsr_priv *hsr, struct sk_buff *skb)
{
- struct ethhdr *ethHdr;
- struct hsr_sup_tag *hsrSupTag;
- struct hsrv1_ethhdr_sp *hsrV1Hdr;
+ struct ethhdr *eth_hdr;
+ struct hsr_sup_tag *hsr_sup_tag;
+ struct hsrv1_ethhdr_sp *hsr_V1_hdr;
WARN_ON_ONCE(!skb_mac_header_was_set(skb));
- ethHdr = (struct ethhdr *) skb_mac_header(skb);
+ eth_hdr = (struct ethhdr *)skb_mac_header(skb);
/* Correct addr? */
- if (!ether_addr_equal(ethHdr->h_dest,
+ if (!ether_addr_equal(eth_hdr->h_dest,
hsr->sup_multicast_addr))
return false;
/* Correct ether type?. */
- if (!(ethHdr->h_proto == htons(ETH_P_PRP)
- || ethHdr->h_proto == htons(ETH_P_HSR)))
+ if (!(eth_hdr->h_proto == htons(ETH_P_PRP) ||
+ eth_hdr->h_proto == htons(ETH_P_HSR)))
return false;
/* Get the supervision header from correct location. */
- if (ethHdr->h_proto == htons(ETH_P_HSR)) { /* Okay HSRv1. */
- hsrV1Hdr = (struct hsrv1_ethhdr_sp *) skb_mac_header(skb);
- if (hsrV1Hdr->hsr.encap_proto != htons(ETH_P_PRP))
+ if (eth_hdr->h_proto == htons(ETH_P_HSR)) { /* Okay HSRv1. */
+ hsr_V1_hdr = (struct hsrv1_ethhdr_sp *)skb_mac_header(skb);
+ if (hsr_V1_hdr->hsr.encap_proto != htons(ETH_P_PRP))
return false;
- hsrSupTag = &hsrV1Hdr->hsr_sup;
+ hsr_sup_tag = &hsr_V1_hdr->hsr_sup;
} else {
- hsrSupTag = &((struct hsrv0_ethhdr_sp *) skb_mac_header(skb))->hsr_sup;
+ hsr_sup_tag =
+ &((struct hsrv0_ethhdr_sp *)skb_mac_header(skb))->hsr_sup;
}
- if ((hsrSupTag->HSR_TLV_Type != HSR_TLV_ANNOUNCE) &&
- (hsrSupTag->HSR_TLV_Type != HSR_TLV_LIFE_CHECK))
+ if (hsr_sup_tag->HSR_TLV_type != HSR_TLV_ANNOUNCE &&
+ hsr_sup_tag->HSR_TLV_type != HSR_TLV_LIFE_CHECK &&
+ hsr_sup_tag->HSR_TLV_type != PRP_TLV_LIFE_CHECK_DD &&
+ hsr_sup_tag->HSR_TLV_type != PRP_TLV_LIFE_CHECK_DA)
return false;
- if ((hsrSupTag->HSR_TLV_Length != 12) &&
- (hsrSupTag->HSR_TLV_Length !=
- sizeof(struct hsr_sup_payload)))
+ if (hsr_sup_tag->HSR_TLV_length != 12 &&
+ hsr_sup_tag->HSR_TLV_length != sizeof(struct hsr_sup_payload))
return false;
return true;
}
-
-static struct sk_buff *create_stripped_skb(struct sk_buff *skb_in,
- struct hsr_frame_info *frame)
+static struct sk_buff *create_stripped_skb_hsr(struct sk_buff *skb_in,
+ struct hsr_frame_info *frame)
{
struct sk_buff *skb;
int copylen;
@@ -100,7 +85,7 @@
skb_pull(skb_in, HSR_HLEN);
skb = __pskb_copy(skb_in, skb_headroom(skb_in) - HSR_HLEN, GFP_ATOMIC);
skb_push(skb_in, HSR_HLEN);
- if (skb == NULL)
+ if (!skb)
return NULL;
skb_reset_mac_header(skb);
@@ -108,7 +93,7 @@
if (skb->ip_summed == CHECKSUM_PARTIAL)
skb->csum_start -= HSR_HLEN;
- copylen = 2*ETH_ALEN;
+ copylen = 2 * ETH_ALEN;
if (frame->is_vlan)
copylen += VLAN_HLEN;
src = skb_mac_header(skb_in);
@@ -119,52 +104,157 @@
return skb;
}
-static struct sk_buff *frame_get_stripped_skb(struct hsr_frame_info *frame,
- struct hsr_port *port)
+struct sk_buff *hsr_get_untagged_frame(struct hsr_frame_info *frame,
+ struct hsr_port *port)
{
- if (!frame->skb_std)
- frame->skb_std = create_stripped_skb(frame->skb_hsr, frame);
+ if (!frame->skb_std) {
+ if (frame->skb_hsr)
+ frame->skb_std =
+ create_stripped_skb_hsr(frame->skb_hsr, frame);
+ else
+ netdev_warn_once(port->dev,
+ "Unexpected frame received in hsr_get_untagged_frame()\n");
+
+ if (!frame->skb_std)
+ return NULL;
+ }
+
return skb_clone(frame->skb_std, GFP_ATOMIC);
}
-
-static void hsr_fill_tag(struct sk_buff *skb, struct hsr_frame_info *frame,
- struct hsr_port *port, u8 protoVersion)
+struct sk_buff *prp_get_untagged_frame(struct hsr_frame_info *frame,
+ struct hsr_port *port)
{
- struct hsr_ethhdr *hsr_ethhdr;
+ if (!frame->skb_std) {
+ if (frame->skb_prp) {
+ /* trim the skb by len - HSR_HLEN to exclude RCT */
+ skb_trim(frame->skb_prp,
+ frame->skb_prp->len - HSR_HLEN);
+ frame->skb_std =
+ __pskb_copy(frame->skb_prp,
+ skb_headroom(frame->skb_prp),
+ GFP_ATOMIC);
+ } else {
+ /* Unexpected */
+ WARN_ONCE(1, "%s:%d: Unexpected frame received (port_src %s)\n",
+ __FILE__, __LINE__, port->dev->name);
+ return NULL;
+ }
+ }
+
+ return skb_clone(frame->skb_std, GFP_ATOMIC);
+}
+
+static void prp_set_lan_id(struct prp_rct *trailer,
+ struct hsr_port *port)
+{
int lane_id;
- int lsdu_size;
if (port->type == HSR_PT_SLAVE_A)
lane_id = 0;
else
lane_id = 1;
+ /* Add net_id in the upper 3 bits of lane_id */
+ lane_id |= port->hsr->net_id;
+ set_prp_lan_id(trailer, lane_id);
+}
+
+/* Tailroom for PRP rct should have been created before calling this */
+static struct sk_buff *prp_fill_rct(struct sk_buff *skb,
+ struct hsr_frame_info *frame,
+ struct hsr_port *port)
+{
+ struct prp_rct *trailer;
+ int min_size = ETH_ZLEN;
+ int lsdu_size;
+
+ if (!skb)
+ return skb;
+
+ if (frame->is_vlan)
+ min_size = VLAN_ETH_ZLEN;
+
+ if (skb_put_padto(skb, min_size))
+ return NULL;
+
+ trailer = (struct prp_rct *)skb_put(skb, HSR_HLEN);
+ lsdu_size = skb->len - 14;
+ if (frame->is_vlan)
+ lsdu_size -= 4;
+ prp_set_lan_id(trailer, port);
+ set_prp_LSDU_size(trailer, lsdu_size);
+ trailer->sequence_nr = htons(frame->sequence_nr);
+ trailer->PRP_suffix = htons(ETH_P_PRP);
+ skb->protocol = eth_hdr(skb)->h_proto;
+
+ return skb;
+}
+
+static void hsr_set_path_id(struct hsr_ethhdr *hsr_ethhdr,
+ struct hsr_port *port)
+{
+ int path_id;
+
+ if (port->type == HSR_PT_SLAVE_A)
+ path_id = 0;
+ else
+ path_id = 1;
+
+ set_hsr_tag_path(&hsr_ethhdr->hsr_tag, path_id);
+}
+
+static struct sk_buff *hsr_fill_tag(struct sk_buff *skb,
+ struct hsr_frame_info *frame,
+ struct hsr_port *port, u8 proto_version)
+{
+ struct hsr_ethhdr *hsr_ethhdr;
+ int lsdu_size;
+
+ /* pad to minimum packet size which is 60 + 6 (HSR tag) */
+ if (skb_put_padto(skb, ETH_ZLEN + HSR_HLEN))
+ return NULL;
+
lsdu_size = skb->len - 14;
if (frame->is_vlan)
lsdu_size -= 4;
- hsr_ethhdr = (struct hsr_ethhdr *) skb_mac_header(skb);
+ hsr_ethhdr = (struct hsr_ethhdr *)skb_mac_header(skb);
- set_hsr_tag_path(&hsr_ethhdr->hsr_tag, lane_id);
+ hsr_set_path_id(hsr_ethhdr, port);
set_hsr_tag_LSDU_size(&hsr_ethhdr->hsr_tag, lsdu_size);
hsr_ethhdr->hsr_tag.sequence_nr = htons(frame->sequence_nr);
hsr_ethhdr->hsr_tag.encap_proto = hsr_ethhdr->ethhdr.h_proto;
- hsr_ethhdr->ethhdr.h_proto = htons(protoVersion ?
+ hsr_ethhdr->ethhdr.h_proto = htons(proto_version ?
ETH_P_HSR : ETH_P_PRP);
+ skb->protocol = hsr_ethhdr->ethhdr.h_proto;
+
+ return skb;
}
-static struct sk_buff *create_tagged_skb(struct sk_buff *skb_o,
- struct hsr_frame_info *frame,
- struct hsr_port *port)
+/* If the original frame was an HSR tagged frame, just clone it to be sent
+ * unchanged. Otherwise, create a private frame especially tagged for 'port'.
+ */
+struct sk_buff *hsr_create_tagged_frame(struct hsr_frame_info *frame,
+ struct hsr_port *port)
{
- int movelen;
unsigned char *dst, *src;
struct sk_buff *skb;
+ int movelen;
+
+ if (frame->skb_hsr) {
+ struct hsr_ethhdr *hsr_ethhdr =
+ (struct hsr_ethhdr *)skb_mac_header(frame->skb_hsr);
+
+ /* set the lane id properly */
+ hsr_set_path_id(hsr_ethhdr, port);
+ return skb_clone(frame->skb_hsr, GFP_ATOMIC);
+ }
/* Create the new skb with enough headroom to fit the HSR tag */
- skb = __pskb_copy(skb_o, skb_headroom(skb_o) + HSR_HLEN, GFP_ATOMIC);
- if (skb == NULL)
+ skb = __pskb_copy(frame->skb_std,
+ skb_headroom(frame->skb_std) + HSR_HLEN, GFP_ATOMIC);
+ if (!skb)
return NULL;
skb_reset_mac_header(skb);
@@ -180,44 +270,53 @@
memmove(dst, src, movelen);
skb_reset_mac_header(skb);
- hsr_fill_tag(skb, frame, port, port->hsr->protVersion);
+ /* skb_put_padto free skb on error and hsr_fill_tag returns NULL in
+ * that case
+ */
+ return hsr_fill_tag(skb, frame, port, port->hsr->prot_version);
+}
+
+struct sk_buff *prp_create_tagged_frame(struct hsr_frame_info *frame,
+ struct hsr_port *port)
+{
+ struct sk_buff *skb;
+
+ if (frame->skb_prp) {
+ struct prp_rct *trailer = skb_get_PRP_rct(frame->skb_prp);
+
+ if (trailer) {
+ prp_set_lan_id(trailer, port);
+ } else {
+ WARN_ONCE(!trailer, "errored PRP skb");
+ return NULL;
+ }
+ return skb_clone(frame->skb_prp, GFP_ATOMIC);
+ }
+
+ skb = skb_copy_expand(frame->skb_std, 0,
+ skb_tailroom(frame->skb_std) + HSR_HLEN,
+ GFP_ATOMIC);
+ prp_fill_rct(skb, frame, port);
return skb;
}
-
-/* If the original frame was an HSR tagged frame, just clone it to be sent
- * unchanged. Otherwise, create a private frame especially tagged for 'port'.
- */
-static struct sk_buff *frame_get_tagged_skb(struct hsr_frame_info *frame,
- struct hsr_port *port)
-{
- if (frame->skb_hsr)
- return skb_clone(frame->skb_hsr, GFP_ATOMIC);
-
- if ((port->type != HSR_PT_SLAVE_A) && (port->type != HSR_PT_SLAVE_B)) {
- WARN_ONCE(1, "HSR: Bug: trying to create a tagged frame for a non-ring port");
- return NULL;
- }
-
- return create_tagged_skb(frame->skb_std, frame, port);
-}
-
static void hsr_deliver_master(struct sk_buff *skb, struct net_device *dev,
struct hsr_node *node_src)
{
bool was_multicast_frame;
- int res;
+ int res, recv_len;
was_multicast_frame = (skb->pkt_type == PACKET_MULTICAST);
hsr_addr_subst_source(node_src, skb);
skb_pull(skb, ETH_HLEN);
+ recv_len = skb->len;
res = netif_rx(skb);
if (res == NET_RX_DROP) {
dev->stats.rx_dropped++;
} else {
dev->stats.rx_packets++;
- dev->stats.rx_bytes += skb->len;
+ dev->stats.rx_bytes += recv_len;
if (was_multicast_frame)
dev->stats.multicast++;
}
@@ -237,10 +336,18 @@
return dev_queue_xmit(skb);
}
+bool prp_drop_frame(struct hsr_frame_info *frame, struct hsr_port *port)
+{
+ return ((frame->port_rcv->type == HSR_PT_SLAVE_A &&
+ port->type == HSR_PT_SLAVE_B) ||
+ (frame->port_rcv->type == HSR_PT_SLAVE_B &&
+ port->type == HSR_PT_SLAVE_A));
+}
/* Forward the frame through all devices except:
* - Back through the receiving device
* - If it's a HSR frame: through a device where it has passed before
+ * - if it's a PRP frame: through another PRP slave device (no bridge)
* - To the local HSR master only if the frame is directly addressed to it, or
* a non-supervision multicast or broadcast frame.
*
@@ -255,36 +362,46 @@
struct sk_buff *skb;
hsr_for_each_port(frame->port_rcv->hsr, port) {
+ struct hsr_priv *hsr = port->hsr;
/* Don't send frame back the way it came */
if (port == frame->port_rcv)
continue;
/* Don't deliver locally unless we should */
- if ((port->type == HSR_PT_MASTER) && !frame->is_local_dest)
+ if (port->type == HSR_PT_MASTER && !frame->is_local_dest)
continue;
/* Deliver frames directly addressed to us to master only */
- if ((port->type != HSR_PT_MASTER) && frame->is_local_exclusive)
+ if (port->type != HSR_PT_MASTER && frame->is_local_exclusive)
continue;
- /* Don't send frame over port where it has been sent before */
- if (hsr_register_frame_out(port, frame->node_src,
+ /* Don't send frame over port where it has been sent before.
+ * Also fro SAN, this shouldn't be done.
+ */
+ if (!frame->is_from_san &&
+ hsr_register_frame_out(port, frame->node_src,
frame->sequence_nr))
continue;
- if (frame->is_supervision && (port->type == HSR_PT_MASTER)) {
- hsr_handle_sup_frame(frame->skb_hsr,
- frame->node_src,
- frame->port_rcv);
+ if (frame->is_supervision && port->type == HSR_PT_MASTER) {
+ hsr_handle_sup_frame(frame);
continue;
}
+ /* Check if frame is to be dropped. Eg. for PRP no forward
+ * between ports.
+ */
+ if (hsr->proto_ops->drop_frame &&
+ hsr->proto_ops->drop_frame(frame, port))
+ continue;
+
if (port->type != HSR_PT_MASTER)
- skb = frame_get_tagged_skb(frame, port);
+ skb = hsr->proto_ops->create_tagged_frame(frame, port);
else
- skb = frame_get_stripped_skb(frame, port);
- if (skb == NULL) {
- /* FIXME: Record the dropped frame? */
+ skb = hsr->proto_ops->get_untagged_frame(frame, port);
+
+ if (!skb) {
+ frame->port_rcv->dev->stats.rx_dropped++;
continue;
}
@@ -296,7 +413,6 @@
}
}
-
static void check_local_dest(struct hsr_priv *hsr, struct sk_buff *skb,
struct hsr_frame_info *frame)
{
@@ -307,50 +423,123 @@
frame->is_local_exclusive = false;
}
- if ((skb->pkt_type == PACKET_HOST) ||
- (skb->pkt_type == PACKET_MULTICAST) ||
- (skb->pkt_type == PACKET_BROADCAST)) {
+ if (skb->pkt_type == PACKET_HOST ||
+ skb->pkt_type == PACKET_MULTICAST ||
+ skb->pkt_type == PACKET_BROADCAST) {
frame->is_local_dest = true;
} else {
frame->is_local_dest = false;
}
}
-
-static int hsr_fill_frame_info(struct hsr_frame_info *frame,
- struct sk_buff *skb, struct hsr_port *port)
+static void handle_std_frame(struct sk_buff *skb,
+ struct hsr_frame_info *frame)
{
- struct ethhdr *ethhdr;
- unsigned long irqflags;
+ struct hsr_port *port = frame->port_rcv;
+ struct hsr_priv *hsr = port->hsr;
- frame->is_supervision = is_supervision_frame(port->hsr, skb);
- frame->node_src = hsr_get_node(port, skb, frame->is_supervision);
- if (frame->node_src == NULL)
- return -1; /* Unknown node and !is_supervision, or no mem */
+ frame->skb_hsr = NULL;
+ frame->skb_prp = NULL;
+ frame->skb_std = skb;
- ethhdr = (struct ethhdr *) skb_mac_header(skb);
- frame->is_vlan = false;
- if (ethhdr->h_proto == htons(ETH_P_8021Q)) {
- frame->is_vlan = true;
- /* FIXME: */
- WARN_ONCE(1, "HSR: VLAN not yet supported");
+ if (port->type != HSR_PT_MASTER) {
+ frame->is_from_san = true;
+ } else {
+ /* Sequence nr for the master node */
+ lockdep_assert_held(&hsr->seqnr_lock);
+ frame->sequence_nr = hsr->sequence_nr;
+ hsr->sequence_nr++;
}
- if (ethhdr->h_proto == htons(ETH_P_PRP)
- || ethhdr->h_proto == htons(ETH_P_HSR)) {
+}
+
+int hsr_fill_frame_info(__be16 proto, struct sk_buff *skb,
+ struct hsr_frame_info *frame)
+{
+ struct hsr_port *port = frame->port_rcv;
+ struct hsr_priv *hsr = port->hsr;
+
+ /* HSRv0 supervisory frames double as a tag so treat them as tagged. */
+ if ((!hsr->prot_version && proto == htons(ETH_P_PRP)) ||
+ proto == htons(ETH_P_HSR)) {
+ /* Check if skb contains hsr_ethhdr */
+ if (skb->mac_len < sizeof(struct hsr_ethhdr))
+ return -EINVAL;
+
+ /* HSR tagged frame :- Data or Supervision */
frame->skb_std = NULL;
+ frame->skb_prp = NULL;
frame->skb_hsr = skb;
frame->sequence_nr = hsr_get_skb_sequence_nr(skb);
- } else {
- frame->skb_std = skb;
- frame->skb_hsr = NULL;
- /* Sequence nr for the master node */
- spin_lock_irqsave(&port->hsr->seqnr_lock, irqflags);
- frame->sequence_nr = port->hsr->sequence_nr;
- port->hsr->sequence_nr++;
- spin_unlock_irqrestore(&port->hsr->seqnr_lock, irqflags);
+ return 0;
}
+ /* Standard frame or PRP from master port */
+ handle_std_frame(skb, frame);
+
+ return 0;
+}
+
+int prp_fill_frame_info(__be16 proto, struct sk_buff *skb,
+ struct hsr_frame_info *frame)
+{
+ /* Supervision frame */
+ struct prp_rct *rct = skb_get_PRP_rct(skb);
+
+ if (rct &&
+ prp_check_lsdu_size(skb, rct, frame->is_supervision)) {
+ frame->skb_hsr = NULL;
+ frame->skb_std = NULL;
+ frame->skb_prp = skb;
+ frame->sequence_nr = prp_get_skb_sequence_nr(rct);
+ return 0;
+ }
+ handle_std_frame(skb, frame);
+
+ return 0;
+}
+
+static int fill_frame_info(struct hsr_frame_info *frame,
+ struct sk_buff *skb, struct hsr_port *port)
+{
+ struct hsr_priv *hsr = port->hsr;
+ struct hsr_vlan_ethhdr *vlan_hdr;
+ struct ethhdr *ethhdr;
+ __be16 proto;
+ int ret;
+
+ /* Check if skb contains ethhdr */
+ if (skb->mac_len < sizeof(struct ethhdr))
+ return -EINVAL;
+
+ memset(frame, 0, sizeof(*frame));
+ frame->is_supervision = is_supervision_frame(port->hsr, skb);
+ frame->node_src = hsr_get_node(port, &hsr->node_db, skb,
+ frame->is_supervision,
+ port->type);
+ if (!frame->node_src)
+ return -1; /* Unknown node and !is_supervision, or no mem */
+
+ ethhdr = (struct ethhdr *)skb_mac_header(skb);
+ frame->is_vlan = false;
+ proto = ethhdr->h_proto;
+
+ if (proto == htons(ETH_P_8021Q))
+ frame->is_vlan = true;
+
+ if (frame->is_vlan) {
+ vlan_hdr = (struct hsr_vlan_ethhdr *)ethhdr;
+ proto = vlan_hdr->vlanhdr.h_vlan_encapsulated_proto;
+ /* FIXME: */
+ netdev_warn_once(skb->dev, "VLAN not yet supported");
+ return -EINVAL;
+ }
+
+ frame->is_from_san = false;
frame->port_rcv = port;
+ ret = hsr->proto_ops->fill_frame_info(proto, skb, frame);
+ if (ret)
+ return ret;
+
check_local_dest(port->hsr, skb, frame);
return 0;
@@ -361,24 +550,28 @@
{
struct hsr_frame_info frame;
- if (skb_mac_header(skb) != skb->data) {
- WARN_ONCE(1, "%s:%d: Malformed frame (port_src %s)\n",
- __FILE__, __LINE__, port->dev->name);
+ rcu_read_lock();
+ if (fill_frame_info(&frame, skb, port) < 0)
goto out_drop;
- }
- if (hsr_fill_frame_info(&frame, skb, port) < 0)
- goto out_drop;
hsr_register_frame_in(frame.node_src, port, frame.sequence_nr);
hsr_forward_do(&frame);
+ rcu_read_unlock();
+ /* Gets called for ingress frames as well as egress from master port.
+ * So check and increment stats for master port only here.
+ */
+ if (port->type == HSR_PT_MASTER) {
+ port->dev->stats.tx_packets++;
+ port->dev->stats.tx_bytes += skb->len;
+ }
- if (frame.skb_hsr != NULL)
- kfree_skb(frame.skb_hsr);
- if (frame.skb_std != NULL)
- kfree_skb(frame.skb_std);
+ kfree_skb(frame.skb_hsr);
+ kfree_skb(frame.skb_prp);
+ kfree_skb(frame.skb_std);
return;
out_drop:
+ rcu_read_unlock();
port->dev->stats.tx_dropped++;
kfree_skb(skb);
}
--
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