omap4: pandaboard: fix up mmc card detect logic

[firefly-linux-kernel-4.4.55.git] / net / dccp / options.c

diff --git a/net/dccp/options.c b/net/dccp/options.c
index 07395f861d35aa819e154ebc66114472687e7a6a..cd306181300940f924b682c9f77e5881323ce6a0 100644 (file)
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -96,18 +96,11 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                }
 
                /*
-                * CCID-Specific Options (from RFC 4340, sec. 10.3):
-                *
-                * Option numbers 128 through 191 are for options sent from the
-                * HC-Sender to the HC-Receiver; option numbers 192 through 255
-                * are for options sent from the HC-Receiver to the HC-Sender.
-                *
                 * CCID-specific options are ignored during connection setup, as
                 * negotiation may still be in progress (see RFC 4340, 10.3).
                 * The same applies to Ack Vectors, as these depend on the CCID.
-                *
                 */
-               if (dreq != NULL && (opt >= 128 ||
+               if (dreq != NULL && (opt >= DCCPO_MIN_RX_CCID_SPECIFIC ||
                    opt == DCCPO_ACK_VECTOR_0 || opt == DCCPO_ACK_VECTOR_1))
                        goto ignore_option;
 
@@ -170,6 +163,8 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                                      dccp_role(sk), ntohl(opt_val),
                                      (unsigned long long)
                                      DCCP_SKB_CB(skb)->dccpd_ack_seq);
+                       /* schedule an Ack in case this sender is quiescent */
+                       inet_csk_schedule_ack(sk);
                        break;
                case DCCPO_TIMESTAMP_ECHO:
                        if (len != 4 && len != 6 && len != 8)
@@ -226,23 +221,15 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                        dccp_pr_debug("%s rx opt: ELAPSED_TIME=%d\n",
                                      dccp_role(sk), elapsed_time);
                        break;
-               case 128 ... 191: {
-                       const u16 idx = value - options;
-
+               case DCCPO_MIN_RX_CCID_SPECIFIC ... DCCPO_MAX_RX_CCID_SPECIFIC:
                        if (ccid_hc_rx_parse_options(dp->dccps_hc_rx_ccid, sk,
-                                                    opt, len, idx,
-                                                    value) != 0)
+                                                    pkt_type, opt, value, len))
                                goto out_invalid_option;
-               }
                        break;
-               case 192 ... 255: {
-                       const u16 idx = value - options;
-
+               case DCCPO_MIN_TX_CCID_SPECIFIC ... DCCPO_MAX_TX_CCID_SPECIFIC:
                        if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk,
-                                                    opt, len, idx,
-                                                    value) != 0)
+                                                    pkt_type, opt, value, len))
                                goto out_invalid_option;
-               }
                        break;
                default:
                        DCCP_CRIT("DCCP(%p): option %d(len=%d) not "
@@ -299,9 +286,8 @@ static inline u8 dccp_ndp_len(const u64 ndp)
        return likely(ndp <= USHRT_MAX) ? 2 : (ndp <= UINT_MAX ? 4 : 6);
 }
 
-int dccp_insert_option(struct sock *sk, struct sk_buff *skb,
-                       const unsigned char option,
-                       const void *value, const unsigned char len)
+int dccp_insert_option(struct sk_buff *skb, const unsigned char option,
+                      const void *value, const unsigned char len)
 {
        unsigned char *to;
 
@@ -354,8 +340,7 @@ static inline int dccp_elapsed_time_len(const u32 elapsed_time)
        return elapsed_time == 0 ? 0 : elapsed_time <= 0xFFFF ? 2 : 4;
 }
 
-int dccp_insert_option_elapsed_time(struct sock *sk, struct sk_buff *skb,
-                                   u32 elapsed_time)
+int dccp_insert_option_elapsed_time(struct sk_buff *skb, u32 elapsed_time)
 {
        const int elapsed_time_len = dccp_elapsed_time_len(elapsed_time);
        const int len = 2 + elapsed_time_len;
@@ -386,17 +371,15 @@ int dccp_insert_option_elapsed_time(struct sock *sk, struct sk_buff *skb,
 
 EXPORT_SYMBOL_GPL(dccp_insert_option_elapsed_time);
 
-int dccp_insert_option_timestamp(struct sock *sk, struct sk_buff *skb)
+static int dccp_insert_option_timestamp(struct sk_buff *skb)
 {
        __be32 now = htonl(dccp_timestamp());
        /* yes this will overflow but that is the point as we want a
         * 10 usec 32 bit timer which mean it wraps every 11.9 hours */
 
-       return dccp_insert_option(sk, skb, DCCPO_TIMESTAMP, &now, sizeof(now));
+       return dccp_insert_option(skb, DCCPO_TIMESTAMP, &now, sizeof(now));
 }
 
-EXPORT_SYMBOL_GPL(dccp_insert_option_timestamp);
-
 static int dccp_insert_option_timestamp_echo(struct dccp_sock *dp,
                                             struct dccp_request_sock *dreq,
                                             struct sk_buff *skb)
@@ -531,9 +514,9 @@ int dccp_insert_options(struct sock *sk, struct sk_buff *skb)
                if (DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_REQUEST) {
                        /*
                         * Obtain RTT sample from Request/Response exchange.
-                        * This is currently used in CCID 3 initialisation.
+                        * This is currently used for TFRC initialisation.
                         */
-                       if (dccp_insert_option_timestamp(sk, skb))
+                       if (dccp_insert_option_timestamp(skb))
                                return -1;
 
                } else if (dp->dccps_hc_rx_ackvec != NULL &&
@@ -564,6 +547,10 @@ int dccp_insert_options_rsk(struct dccp_request_sock *dreq, struct sk_buff *skb)
        if (dccp_feat_insert_opts(NULL, dreq, skb))
                return -1;
 
+       /* Obtain RTT sample from Response/Ack exchange (used by TFRC). */
+       if (dccp_insert_option_timestamp(skb))
+               return -1;
+
        if (dreq->dreq_timestamp_echo != 0 &&
            dccp_insert_option_timestamp_echo(NULL, dreq, skb))
                return -1;