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-rw-r--r--include/net/tcp.h22
1 files changed, 0 insertions, 22 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e2d2ca2509be..0248c181a92c 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1261,28 +1261,6 @@ static inline struct sk_buff *tcp_write_queue_prev(struct sock *sk, struct sk_bu
1261#define tcp_for_write_queue_from_safe(skb, tmp, sk) \ 1261#define tcp_for_write_queue_from_safe(skb, tmp, sk) \
1262 skb_queue_walk_from_safe(&(sk)->sk_write_queue, skb, tmp) 1262 skb_queue_walk_from_safe(&(sk)->sk_write_queue, skb, tmp)
1263 1263
1264/* This function calculates a "timeout" which is equivalent to the timeout of a
1265 * TCP connection after "boundary" unsucessful, exponentially backed-off
1266 * retransmissions with an initial RTO of TCP_RTO_MIN.
1267 */
1268static inline bool retransmits_timed_out(const struct sock *sk,
1269 unsigned int boundary)
1270{
1271 unsigned int timeout, linear_backoff_thresh;
1272
1273 if (!inet_csk(sk)->icsk_retransmits)
1274 return false;
1275
1276 linear_backoff_thresh = ilog2(TCP_RTO_MAX/TCP_RTO_MIN);
1277
1278 if (boundary <= linear_backoff_thresh)
1279 timeout = ((2 << boundary) - 1) * TCP_RTO_MIN;
1280 else
1281 timeout = ((2 << linear_backoff_thresh) - 1) * TCP_RTO_MIN +
1282 (boundary - linear_backoff_thresh) * TCP_RTO_MAX;
1283
1284 return (tcp_time_stamp - tcp_sk(sk)->retrans_stamp) >= timeout;
1285}
1286 1264
1287static inline struct sk_buff *tcp_send_head(struct sock *sk) 1265static inline struct sk_buff *tcp_send_head(struct sock *sk)
1288{ 1266{