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-rw-r--r--net/bluetooth/hci_sysfs.c4
-rw-r--r--net/bluetooth/l2cap.c9
-rw-r--r--net/core/pktgen.c15
-rw-r--r--net/ipv4/inet_connection_sock.c34
-rw-r--r--net/ipv4/ip_sockglue.c7
-rw-r--r--net/ipv4/tcp.c59
-rw-r--r--net/ipv4/tcp_minisocks.c5
-rw-r--r--net/ipv6/ipv6_sockglue.c6
-rw-r--r--net/unix/af_unix.c2
9 files changed, 107 insertions, 34 deletions
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 7f939ce29801..2bc6f6a8de68 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -92,6 +92,8 @@ static void add_conn(struct work_struct *work)
dev_set_name(&conn->dev, "%s:%d", hdev->name, conn->handle);
+ dev_set_drvdata(&conn->dev, conn);
+
if (device_add(&conn->dev) < 0) {
BT_ERR("Failed to register connection device");
return;
@@ -144,8 +146,6 @@ void hci_conn_init_sysfs(struct hci_conn *conn)
conn->dev.class = bt_class;
conn->dev.parent = &hdev->dev;
- dev_set_drvdata(&conn->dev, conn);
-
device_initialize(&conn->dev);
INIT_WORK(&conn->work_add, add_conn);
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 4b66bd579f4a..d65101d92ee5 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -555,12 +555,12 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
conn->feat_mask = 0;
- setup_timer(&conn->info_timer, l2cap_info_timeout,
- (unsigned long) conn);
-
spin_lock_init(&conn->lock);
rwlock_init(&conn->chan_list.lock);
+ setup_timer(&conn->info_timer, l2cap_info_timeout,
+ (unsigned long) conn);
+
conn->disc_reason = 0x13;
return conn;
@@ -783,6 +783,9 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent)
/* Default config options */
pi->conf_len = 0;
pi->flush_to = L2CAP_DEFAULT_FLUSH_TO;
+ skb_queue_head_init(TX_QUEUE(sk));
+ skb_queue_head_init(SREJ_QUEUE(sk));
+ INIT_LIST_HEAD(SREJ_LIST(sk));
}
static struct proto l2cap_proto = {
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 1da0e038df78..5ce017bf4afa 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -335,6 +335,7 @@ struct pktgen_dev {
__u32 cur_src_mac_offset;
__be32 cur_saddr;
__be32 cur_daddr;
+ __u16 ip_id;
__u16 cur_udp_dst;
__u16 cur_udp_src;
__u16 cur_queue_map;
@@ -2630,6 +2631,8 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
iph->protocol = IPPROTO_UDP; /* UDP */
iph->saddr = pkt_dev->cur_saddr;
iph->daddr = pkt_dev->cur_daddr;
+ iph->id = htons(pkt_dev->ip_id);
+ pkt_dev->ip_id++;
iph->frag_off = 0;
iplen = 20 + 8 + datalen;
iph->tot_len = htons(iplen);
@@ -2641,24 +2644,26 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
- if (pkt_dev->nfrags <= 0)
+ if (pkt_dev->nfrags <= 0) {
pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
- else {
+ memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr));
+ } else {
int frags = pkt_dev->nfrags;
- int i;
+ int i, len;
pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
if (frags > MAX_SKB_FRAGS)
frags = MAX_SKB_FRAGS;
if (datalen > frags * PAGE_SIZE) {
- skb_put(skb, datalen - frags * PAGE_SIZE);
+ len = datalen - frags * PAGE_SIZE;
+ memset(skb_put(skb, len), 0, len);
datalen = frags * PAGE_SIZE;
}
i = 0;
while (datalen > 0) {
- struct page *page = alloc_pages(GFP_KERNEL, 0);
+ struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
skb_shinfo(skb)->frags[i].page = page;
skb_shinfo(skb)->frags[i].page_offset = 0;
skb_shinfo(skb)->frags[i].size =
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index f6a0af759932..26fb50e91311 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -447,6 +447,28 @@ extern int sysctl_tcp_synack_retries;
EXPORT_SYMBOL_GPL(inet_csk_reqsk_queue_hash_add);
+/* Decide when to expire the request and when to resend SYN-ACK */
+static inline void syn_ack_recalc(struct request_sock *req, const int thresh,
+ const int max_retries,
+ const u8 rskq_defer_accept,
+ int *expire, int *resend)
+{
+ if (!rskq_defer_accept) {
+ *expire = req->retrans >= thresh;
+ *resend = 1;
+ return;
+ }
+ *expire = req->retrans >= thresh &&
+ (!inet_rsk(req)->acked || req->retrans >= max_retries);
+ /*
+ * Do not resend while waiting for data after ACK,
+ * start to resend on end of deferring period to give
+ * last chance for data or ACK to create established socket.
+ */
+ *resend = !inet_rsk(req)->acked ||
+ req->retrans >= rskq_defer_accept - 1;
+}
+
void inet_csk_reqsk_queue_prune(struct sock *parent,
const unsigned long interval,
const unsigned long timeout,
@@ -502,9 +524,15 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
reqp=&lopt->syn_table[i];
while ((req = *reqp) != NULL) {
if (time_after_eq(now, req->expires)) {
- if ((req->retrans < thresh ||
- (inet_rsk(req)->acked && req->retrans < max_retries))
- && !req->rsk_ops->rtx_syn_ack(parent, req)) {
+ int expire = 0, resend = 0;
+
+ syn_ack_recalc(req, thresh, max_retries,
+ queue->rskq_defer_accept,
+ &expire, &resend);
+ if (!expire &&
+ (!resend ||
+ !req->rsk_ops->rtx_syn_ack(parent, req) ||
+ inet_rsk(req)->acked)) {
unsigned long timeo;
if (req->retrans++ == 0)
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 2445fedec0b8..a72f43ce33be 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -634,17 +634,16 @@ static int do_ip_setsockopt(struct sock *sk, int level,
break;
}
dev = ip_dev_find(sock_net(sk), mreq.imr_address.s_addr);
- if (dev) {
+ if (dev)
mreq.imr_ifindex = dev->ifindex;
- dev_put(dev);
- }
} else
- dev = __dev_get_by_index(sock_net(sk), mreq.imr_ifindex);
+ dev = dev_get_by_index(sock_net(sk), mreq.imr_ifindex);
err = -EADDRNOTAVAIL;
if (!dev)
break;
+ dev_put(dev);
err = -EINVAL;
if (sk->sk_bound_dev_if &&
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 206a291dff03..e0cfa633680a 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -326,6 +326,43 @@ void tcp_enter_memory_pressure(struct sock *sk)
EXPORT_SYMBOL(tcp_enter_memory_pressure);
+/* Convert seconds to retransmits based on initial and max timeout */
+static u8 secs_to_retrans(int seconds, int timeout, int rto_max)
+{
+ u8 res = 0;
+
+ if (seconds > 0) {
+ int period = timeout;
+
+ res = 1;
+ while (seconds > period && res < 255) {
+ res++;
+ timeout <<= 1;
+ if (timeout > rto_max)
+ timeout = rto_max;
+ period += timeout;
+ }
+ }
+ return res;
+}
+
+/* Convert retransmits to seconds based on initial and max timeout */
+static int retrans_to_secs(u8 retrans, int timeout, int rto_max)
+{
+ int period = 0;
+
+ if (retrans > 0) {
+ period = timeout;
+ while (--retrans) {
+ timeout <<= 1;
+ if (timeout > rto_max)
+ timeout = rto_max;
+ period += timeout;
+ }
+ }
+ return period;
+}
+
/*
* Wait for a TCP event.
*
@@ -1405,7 +1442,9 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
goto found_ok_skb;
if (tcp_hdr(skb)->fin)
goto found_fin_ok;
- WARN_ON(!(flags & MSG_PEEK));
+ WARN(!(flags & MSG_PEEK), KERN_INFO "recvmsg bug 2: "
+ "copied %X seq %X\n", *seq,
+ TCP_SKB_CB(skb)->seq);
}
/* Well, if we have backlog, try to process it now yet. */
@@ -2163,16 +2202,10 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
break;
case TCP_DEFER_ACCEPT:
- icsk->icsk_accept_queue.rskq_defer_accept = 0;
- if (val > 0) {
- /* Translate value in seconds to number of
- * retransmits */
- while (icsk->icsk_accept_queue.rskq_defer_accept < 32 &&
- val > ((TCP_TIMEOUT_INIT / HZ) <<
- icsk->icsk_accept_queue.rskq_defer_accept))
- icsk->icsk_accept_queue.rskq_defer_accept++;
- icsk->icsk_accept_queue.rskq_defer_accept++;
- }
+ /* Translate value in seconds to number of retransmits */
+ icsk->icsk_accept_queue.rskq_defer_accept =
+ secs_to_retrans(val, TCP_TIMEOUT_INIT / HZ,
+ TCP_RTO_MAX / HZ);
break;
case TCP_WINDOW_CLAMP:
@@ -2353,8 +2386,8 @@ static int do_tcp_getsockopt(struct sock *sk, int level,
val = (val ? : sysctl_tcp_fin_timeout) / HZ;
break;
case TCP_DEFER_ACCEPT:
- val = !icsk->icsk_accept_queue.rskq_defer_accept ? 0 :
- ((TCP_TIMEOUT_INIT / HZ) << (icsk->icsk_accept_queue.rskq_defer_accept - 1));
+ val = retrans_to_secs(icsk->icsk_accept_queue.rskq_defer_accept,
+ TCP_TIMEOUT_INIT / HZ, TCP_RTO_MAX / HZ);
break;
case TCP_WINDOW_CLAMP:
val = tp->window_clamp;
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index e320afea07fc..4c03598ed924 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -641,10 +641,9 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
if (!(flg & TCP_FLAG_ACK))
return NULL;
- /* If TCP_DEFER_ACCEPT is set, drop bare ACK. */
- if (inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
+ /* While TCP_DEFER_ACCEPT is active, drop bare ACK. */
+ if (req->retrans < inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
- inet_csk(sk)->icsk_accept_queue.rskq_defer_accept--;
inet_rsk(req)->acked = 1;
return NULL;
}
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 68566de4bcc5..430454ee5ead 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -497,13 +497,17 @@ done:
goto e_inval;
if (val) {
+ struct net_device *dev;
+
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
goto e_inval;
- if (__dev_get_by_index(net, val) == NULL) {
+ dev = dev_get_by_index(net, val);
+ if (!dev) {
retv = -ENODEV;
break;
}
+ dev_put(dev);
}
np->mcast_oif = val;
retv = 0;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 0f133c5a8d3c..3291902f0b88 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1074,6 +1074,8 @@ restart:
err = -ECONNREFUSED;
if (other->sk_state != TCP_LISTEN)
goto out_unlock;
+ if (other->sk_shutdown & RCV_SHUTDOWN)
+ goto out_unlock;
if (unix_recvq_full(other)) {
err = -EAGAIN;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.