New line added after declaration
Tabs have been used instead of spaces for indentation
Each subsequent line of block commment start with a *
This is done to maintain code uniformity
Signed-off-by: Shubhankar Kuranagatti <shubhankarvk@xxxxxxxxx>
---
net/packet/af_packet.c | 43 +++++++++++++++++++++++++-----------------
1 file changed, 26 insertions(+), 17 deletions(-)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index e24b2841c643..8b6417afb12a 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -93,20 +93,20 @@
#include "internal.h"
/*
- Assumptions:
- - If the device has no dev->header_ops->create, there is no LL header
- visible above the device. In this case, its hard_header_len should be 0.
- The device may prepend its own header internally. In this case, its
- needed_headroom should be set to the space needed for it to add its
- internal header.
- For example, a WiFi driver pretending to be an Ethernet driver should
- set its hard_header_len to be the Ethernet header length, and set its
- needed_headroom to be (the real WiFi header length - the fake Ethernet
- header length).
- - packet socket receives packets with pulled ll header,
- so that SOCK_RAW should push it back.
-
-On receive:
+ * Assumptions:
+ * - If the device has no dev->header_ops->create, there is no LL header
+ * visible above the device. In this case, its hard_header_len should be 0.
+ * The device may prepend its own header internally. In this case, its
+ * needed_headroom should be set to the space needed for it to add its
+ * internal header.
+ * For example, a WiFi driver pretending to be an Ethernet driver should
+ * set its hard_header_len to be the Ethernet header length, and set its
+ * needed_headroom to be (the real WiFi header length - the fake Ethernet
+ * header length).
+ * - packet socket receives packets with pulled ll header,
+ * so that SOCK_RAW should push it back.
+
+ On receive:
-----------
Incoming, dev_has_header(dev) == true
@@ -781,6 +781,7 @@ static void prb_close_block(struct tpacket_kbdq_core *pkc1,
* blocks. See prb_retire_rx_blk_timer_expired().
*/
struct timespec64 ts;
+
ktime_get_real_ts64(&ts);
h1->ts_last_pkt.ts_sec = ts.tv_sec;
h1->ts_last_pkt.ts_nsec = ts.tv_nsec;
@@ -1075,6 +1076,7 @@ static void *packet_current_rx_frame(struct packet_sock *po,
int status, unsigned int len)
{
char *curr = NULL;
+
switch (po->tp_version) {
case TPACKET_V1:
case TPACKET_V2:
@@ -1106,6 +1108,7 @@ static void *prb_lookup_block(const struct packet_sock *po,
static int prb_previous_blk_num(struct packet_ring_buffer *rb)
{
unsigned int prev;
+
if (rb->prb_bdqc.kactive_blk_num)
prev = rb->prb_bdqc.kactive_blk_num-1;
else
@@ -1119,6 +1122,7 @@ static void *__prb_previous_block(struct packet_sock *po,
int status)
{
unsigned int previous = prb_previous_blk_num(rb);
+
return prb_lookup_block(po, rb, previous, status);
}
@@ -1152,6 +1156,7 @@ static void *packet_previous_frame(struct packet_sock *po,
int status)
{
unsigned int previous = rb->head ? rb->head - 1 : rb->frame_max;
+
return packet_lookup_frame(po, rb, previous, status);
}
@@ -2112,6 +2117,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
if (skb_shared(skb)) {
struct sk_buff *nskb = skb_clone(skb, GFP_ATOMIC);
+
if (nskb == NULL)
goto drop_n_acct;
@@ -2248,6 +2254,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
po->tp_reserve;
} else {
unsigned int maclen = skb_network_offset(skb);
+
netoff = TPACKET_ALIGN(po->tp_hdrlen +
(maclen < 16 ? 16 : maclen)) +
po->tp_reserve;
@@ -2841,9 +2848,9 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
}
static struct sk_buff *packet_alloc_skb(struct sock *sk, size_t prepad,
- size_t reserve, size_t len,
- size_t linear, int noblock,
- int *err)
+ size_t reserve, size_t len,
+ size_t linear, int noblock,
+ int *err)
{
struct sk_buff *skb;
@@ -3695,6 +3702,7 @@ packet_setsockopt(struct socket *sock, int level, int optname, sockptr_t optval,
{
struct packet_mreq_max mreq;
int len = optlen;
+
memset(&mreq, 0, sizeof(mreq));
if (len < sizeof(struct packet_mreq))
return -EINVAL;
@@ -4583,6 +4591,7 @@ static void *packet_seq_start(struct seq_file *seq, loff_t *pos)
static void *packet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct net *net = seq_file_net(seq);
+
return seq_hlist_next_rcu(v, &net->packet.sklist, pos);
}
--
2.17.1
