[ACKVEC]: Reduce length of identifiers

This is reduces the length of the struct ackvec/ackvec_record fields. It is
a purely text-based replacement:

	s#dccpavr_#avr_#g;
	s#dccpav_#av_#g;

and increases readability somewhat.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 77 insertions, 86 deletions

diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c
index 83378f379f72..6de4bd195d28 100644
--- a/net/dccp/ackvec.c
+++ b/net/dccp/ackvec.c
@@ -30,7 +30,7 @@ static struct dccp_ackvec_record *dccp_ackvec_record_new(void)
                         kmem_cache_alloc(dccp_ackvec_record_slab, GFP_ATOMIC);
 
         if (avr != NULL)
-                INIT_LIST_HEAD(&avr->dccpavr_node);
+                INIT_LIST_HEAD(&avr->avr_node);
 
         return avr;
 }
@@ -40,7 +40,7 @@ static void dccp_ackvec_record_delete(struct dccp_ackvec_record *avr)
         if (unlikely(avr == NULL))
                 return;
         /* Check if deleting a linked record */
-        WARN_ON(!list_empty(&avr->dccpavr_node));
+        WARN_ON(!list_empty(&avr->avr_node));
         kmem_cache_free(dccp_ackvec_record_slab, avr);
 }
 
@@ -52,16 +52,15 @@ static void dccp_ackvec_insert_avr(struct dccp_ackvec *av,
          * just add the AVR at the head of the list.
          * -sorbo.
          */
-        if (!list_empty(&av->dccpav_records)) {
+        if (!list_empty(&av->av_records)) {
                 const struct dccp_ackvec_record *head =
-                                        list_entry(av->dccpav_records.next,
+                                        list_entry(av->av_records.next,
                                                    struct dccp_ackvec_record,
-                                                   dccpavr_node);
-                BUG_ON(before48(avr->dccpavr_ack_seqno,
-                                head->dccpavr_ack_seqno));
+                                                   avr_node);
+                BUG_ON(before48(avr->avr_ack_seqno, head->avr_ack_seqno));
         }
 
-        list_add(&avr->dccpavr_node, &av->dccpav_records);
+        list_add(&avr->avr_node, &av->av_records);
 }
 
 int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
@@ -69,9 +68,8 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
         struct dccp_sock *dp = dccp_sk(sk);
         struct dccp_ackvec *av = dp->dccps_hc_rx_ackvec;
         /* Figure out how many options do we need to represent the ackvec */
-        const u16 nr_opts = DIV_ROUND_UP(av->dccpav_vec_len,
-                                         DCCP_MAX_ACKVEC_OPT_LEN);
-        u16 len = av->dccpav_vec_len + 2 * nr_opts, i;
+        const u16 nr_opts = DIV_ROUND_UP(av->av_vec_len, DCCP_MAX_ACKVEC_OPT_LEN);
+        u16 len = av->av_vec_len + 2 * nr_opts, i;
         u32 elapsed_time;
         const unsigned char *tail, *from;
         unsigned char *to;
@@ -81,7 +79,7 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
         if (DCCP_SKB_CB(skb)->dccpd_opt_len + len > DCCP_MAX_OPT_LEN)
                 return -1;
 
-        delta = ktime_us_delta(ktime_get_real(), av->dccpav_time);
+        delta = ktime_us_delta(ktime_get_real(), av->av_time);
         elapsed_time = delta / 10;
 
         if (elapsed_time != 0 &&
@@ -95,9 +93,9 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
         DCCP_SKB_CB(skb)->dccpd_opt_len += len;
 
         to   = skb_push(skb, len);
-        len  = av->dccpav_vec_len;
-        from = av->dccpav_buf + av->dccpav_buf_head;
-        tail = av->dccpav_buf + DCCP_MAX_ACKVEC_LEN;
+        len  = av->av_vec_len;
+        from = av->av_buf + av->av_buf_head;
+        tail = av->av_buf + DCCP_MAX_ACKVEC_LEN;
 
         for (i = 0; i < nr_opts; ++i) {
                 int copylen = len;
@@ -116,7 +114,7 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
                         to      += tailsize;
                         len     -= tailsize;
                         copylen -= tailsize;
-                        from    = av->dccpav_buf;
+                        from    = av->av_buf;
                 }
 
                 memcpy(to, from, copylen);
@@ -134,19 +132,19 @@ int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
          *      buf_head; ack_ackno will equal buf_ackno; and ack_nonce will
          *      equal buf_nonce.
          */
-        avr->dccpavr_ack_seqno = DCCP_SKB_CB(skb)->dccpd_seq;
-        avr->dccpavr_ack_ptr   = av->dccpav_buf_head;
-        avr->dccpavr_ack_ackno = av->dccpav_buf_ackno;
-        avr->dccpavr_ack_nonce = av->dccpav_buf_nonce;
-        avr->dccpavr_sent_len  = av->dccpav_vec_len;
+        avr->avr_ack_seqno = DCCP_SKB_CB(skb)->dccpd_seq;
+        avr->avr_ack_ptr   = av->av_buf_head;
+        avr->avr_ack_ackno = av->av_buf_ackno;
+        avr->avr_ack_nonce = av->av_buf_nonce;
+        avr->avr_sent_len  = av->av_vec_len;
 
         dccp_ackvec_insert_avr(av, avr);
 
         dccp_pr_debug("%s ACK Vector 0, len=%d, ack_seqno=%llu, "
                       "ack_ackno=%llu\n",
-                      dccp_role(sk), avr->dccpavr_sent_len,
-                      (unsigned long long)avr->dccpavr_ack_seqno,
-                      (unsigned long long)avr->dccpavr_ack_ackno);
+                      dccp_role(sk), avr->avr_sent_len,
+                      (unsigned long long)avr->avr_ack_seqno,
+                      (unsigned long long)avr->avr_ack_ackno);
         return 0;
 }
 
@@ -155,12 +153,12 @@ struct dccp_ackvec *dccp_ackvec_alloc(const gfp_t priority)
         struct dccp_ackvec *av = kmem_cache_alloc(dccp_ackvec_slab, priority);
 
         if (av != NULL) {
-                av->dccpav_buf_head     = DCCP_MAX_ACKVEC_LEN - 1;
-                av->dccpav_buf_ackno    = UINT48_MAX + 1;
-                av->dccpav_buf_nonce = av->dccpav_buf_nonce = 0;
-                av->dccpav_time      = ktime_set(0, 0);
-                av->dccpav_vec_len      = 0;
-                INIT_LIST_HEAD(&av->dccpav_records);
+                av->av_buf_head  = DCCP_MAX_ACKVEC_LEN - 1;
+                av->av_buf_ackno = UINT48_MAX + 1;
+                av->av_buf_nonce = 0;
+                av->av_time      = ktime_set(0, 0);
+                av->av_vec_len   = 0;
+                INIT_LIST_HEAD(&av->av_records);
         }
 
         return av;
@@ -171,12 +169,11 @@ void dccp_ackvec_free(struct dccp_ackvec *av)
         if (unlikely(av == NULL))
                 return;
 
-        if (!list_empty(&av->dccpav_records)) {
+        if (!list_empty(&av->av_records)) {
                 struct dccp_ackvec_record *avr, *next;
 
-                list_for_each_entry_safe(avr, next, &av->dccpav_records,
-                                         dccpavr_node) {
-                        list_del_init(&avr->dccpavr_node);
+                list_for_each_entry_safe(avr, next, &av->av_records, avr_node) {
+                        list_del_init(&avr->avr_node);
                         dccp_ackvec_record_delete(avr);
                 }
         }
@@ -187,13 +184,13 @@ void dccp_ackvec_free(struct dccp_ackvec *av)
 static inline u8 dccp_ackvec_state(const struct dccp_ackvec *av,
                                    const u32 index)
 {
-        return av->dccpav_buf[index] & DCCP_ACKVEC_STATE_MASK;
+        return av->av_buf[index] & DCCP_ACKVEC_STATE_MASK;
 }
 
 static inline u8 dccp_ackvec_len(const struct dccp_ackvec *av,
                                  const u32 index)
 {
-        return av->dccpav_buf[index] & DCCP_ACKVEC_LEN_MASK;
+        return av->av_buf[index] & DCCP_ACKVEC_LEN_MASK;
 }
 
 /*
@@ -208,29 +205,29 @@ static inline int dccp_ackvec_set_buf_head_state(struct dccp_ackvec *av,
         unsigned int gap;
         long new_head;
 
-        if (av->dccpav_vec_len + packets > DCCP_MAX_ACKVEC_LEN)
+        if (av->av_vec_len + packets > DCCP_MAX_ACKVEC_LEN)
                 return -ENOBUFS;
 
         gap      = packets - 1;
-        new_head = av->dccpav_buf_head - packets;
+        new_head = av->av_buf_head - packets;
 
         if (new_head < 0) {
                 if (gap > 0) {
-                        memset(av->dccpav_buf, DCCP_ACKVEC_STATE_NOT_RECEIVED,
+                        memset(av->av_buf, DCCP_ACKVEC_STATE_NOT_RECEIVED,
                                gap + new_head + 1);
                         gap = -new_head;
                 }
                 new_head += DCCP_MAX_ACKVEC_LEN;
         }
 
-        av->dccpav_buf_head = new_head;
+        av->av_buf_head = new_head;
 
         if (gap > 0)
-                memset(av->dccpav_buf + av->dccpav_buf_head + 1,
+                memset(av->av_buf + av->av_buf_head + 1,
                        DCCP_ACKVEC_STATE_NOT_RECEIVED, gap);
 
-        av->dccpav_buf[av->dccpav_buf_head] = state;
-        av->dccpav_vec_len += packets;
+        av->av_buf[av->av_buf_head] = state;
+        av->av_vec_len += packets;
         return 0;
 }
 
@@ -243,7 +240,7 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
         /*
          * Check at the right places if the buffer is full, if it is, tell the
          * caller to start dropping packets till the HC-Sender acks our ACK
-         * vectors, when we will free up space in dccpav_buf.
+         * vectors, when we will free up space in av_buf.
          *
          * We may well decide to do buffer compression, etc, but for now lets
          * just drop.
@@ -263,22 +260,20 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
          */
 
         /* See if this is the first ackno being inserted */
-        if (av->dccpav_vec_len == 0) {
-                av->dccpav_buf[av->dccpav_buf_head] = state;
-                av->dccpav_vec_len = 1;
-        } else if (after48(ackno, av->dccpav_buf_ackno)) {
-                const u64 delta = dccp_delta_seqno(av->dccpav_buf_ackno,
-                                                   ackno);
+        if (av->av_vec_len == 0) {
+                av->av_buf[av->av_buf_head] = state;
+                av->av_vec_len = 1;
+        } else if (after48(ackno, av->av_buf_ackno)) {
+                const u64 delta = dccp_delta_seqno(av->av_buf_ackno, ackno);
 
                 /*
                  * Look if the state of this packet is the same as the
                  * previous ackno and if so if we can bump the head len.
                  */
                 if (delta == 1 &&
-                    dccp_ackvec_state(av, av->dccpav_buf_head) == state &&
-                    (dccp_ackvec_len(av, av->dccpav_buf_head) <
-                     DCCP_ACKVEC_LEN_MASK))
-                        av->dccpav_buf[av->dccpav_buf_head]++;
+                    dccp_ackvec_state(av, av->av_buf_head) == state &&
+                    dccp_ackvec_len(av, av->av_buf_head) < DCCP_ACKVEC_LEN_MASK)
+                        av->av_buf[av->av_buf_head]++;
                 else if (dccp_ackvec_set_buf_head_state(av, delta, state))
                         return -ENOBUFS;
         } else {
@@ -290,14 +285,14 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
                  *      the byte corresponding to S. (Indexing structures
                  *      could reduce the complexity of this scan.)
                  */
-                u64 delta = dccp_delta_seqno(ackno, av->dccpav_buf_ackno);
-                u32 index = av->dccpav_buf_head;
+                u64 delta = dccp_delta_seqno(ackno, av->av_buf_ackno);
+                u32 index = av->av_buf_head;
 
                 while (1) {
                         const u8 len = dccp_ackvec_len(av, index);
                         const u8 state = dccp_ackvec_state(av, index);
                         /*
-                         * valid packets not yet in dccpav_buf have a reserved
+                         * valid packets not yet in av_buf have a reserved
                          * entry, with a len equal to 0.
                          */
                         if (state == DCCP_ACKVEC_STATE_NOT_RECEIVED &&
@@ -305,7 +300,7 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
                                                          reserved seat! */
                                 dccp_pr_debug("Found %llu reserved seat!\n",
                                               (unsigned long long)ackno);
-                                av->dccpav_buf[index] = state;
+                                av->av_buf[index] = state;
                                 goto out;
                         }
                         /* len == 0 means one packet */
@@ -318,8 +313,8 @@ int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
                 }
         }
 
-        av->dccpav_buf_ackno = ackno;
-        av->dccpav_time = ktime_get_real();
+        av->av_buf_ackno = ackno;
+        av->av_time = ktime_get_real();
 out:
         return 0;
 
@@ -349,9 +344,9 @@ void dccp_ackvector_print(const u64 ackno, const unsigned char *vector, int len)
 
 void dccp_ackvec_print(const struct dccp_ackvec *av)
 {
-        dccp_ackvector_print(av->dccpav_buf_ackno,
-                             av->dccpav_buf + av->dccpav_buf_head,
-                             av->dccpav_vec_len);
+        dccp_ackvector_print(av->av_buf_ackno,
+                             av->av_buf + av->av_buf_head,
+                             av->av_vec_len);
 }
 #endif
 
@@ -361,17 +356,15 @@ static void dccp_ackvec_throw_record(struct dccp_ackvec *av,
         struct dccp_ackvec_record *next;
 
         /* sort out vector length */
-        if (av->dccpav_buf_head <= avr->dccpavr_ack_ptr)
-                av->dccpav_vec_len = avr->dccpavr_ack_ptr - av->dccpav_buf_head;
+        if (av->av_buf_head <= avr->avr_ack_ptr)
+                av->av_vec_len = avr->avr_ack_ptr - av->av_buf_head;
         else
-                av->dccpav_vec_len = DCCP_MAX_ACKVEC_LEN - 1
-                                     - av->dccpav_buf_head
-                                     + avr->dccpavr_ack_ptr;
+                av->av_vec_len = DCCP_MAX_ACKVEC_LEN - 1 -
+                                 av->av_buf_head + avr->avr_ack_ptr;
 
         /* free records */
-        list_for_each_entry_safe_from(avr, next, &av->dccpav_records,
-                                      dccpavr_node) {
-                list_del_init(&avr->dccpavr_node);
+        list_for_each_entry_safe_from(avr, next, &av->av_records, avr_node) {
+                list_del_init(&avr->avr_node);
                 dccp_ackvec_record_delete(avr);
         }
 }
@@ -386,16 +379,16 @@ void dccp_ackvec_check_rcv_ackno(struct dccp_ackvec *av, struct sock *sk,
          * windows. We will be receiving ACKs for stuff we sent a while back
          * -sorbo.
          */
-        list_for_each_entry_reverse(avr, &av->dccpav_records, dccpavr_node) {
-                if (ackno == avr->dccpavr_ack_seqno) {
+        list_for_each_entry_reverse(avr, &av->av_records, avr_node) {
+                if (ackno == avr->avr_ack_seqno) {
                         dccp_pr_debug("%s ACK packet 0, len=%d, ack_seqno=%llu, "
                                       "ack_ackno=%llu, ACKED!\n",
                                       dccp_role(sk), 1,
-                                      (unsigned long long)avr->dccpavr_ack_seqno,
-                                      (unsigned long long)avr->dccpavr_ack_ackno);
+                                      (unsigned long long)avr->avr_ack_seqno,
+                                      (unsigned long long)avr->avr_ack_ackno);
                         dccp_ackvec_throw_record(av, avr);
                         break;
-                } else if (avr->dccpavr_ack_seqno > ackno)
+                } else if (avr->avr_ack_seqno > ackno)
                         break; /* old news */
         }
 }
@@ -409,7 +402,7 @@ static void dccp_ackvec_check_rcv_ackvector(struct dccp_ackvec *av,
         struct dccp_ackvec_record *avr;
 
         /* Check if we actually sent an ACK vector */
-        if (list_empty(&av->dccpav_records))
+        if (list_empty(&av->av_records))
                 return;
 
         i = len;
@@ -418,8 +411,7 @@ static void dccp_ackvec_check_rcv_ackvector(struct dccp_ackvec *av,
          * I think it might be more efficient to work backwards. See comment on
          * rcv_ackno. -sorbo.
          */
-        avr = list_entry(av->dccpav_records.next, struct dccp_ackvec_record,
-                         dccpavr_node);
+        avr = list_entry(av->av_records.next, struct dccp_ackvec_record, avr_node);
         while (i--) {
                 const u8 rl = *vector & DCCP_ACKVEC_LEN_MASK;
                 u64 ackno_end_rl;
@@ -430,15 +422,14 @@ static void dccp_ackvec_check_rcv_ackvector(struct dccp_ackvec *av,
                  * If our AVR sequence number is greater than the ack, go
                  * forward in the AVR list until it is not so.
                  */
-                list_for_each_entry_from(avr, &av->dccpav_records,
-                                         dccpavr_node) {
-                        if (!after48(avr->dccpavr_ack_seqno, *ackno))
+                list_for_each_entry_from(avr, &av->av_records, avr_node) {
+                        if (!after48(avr->avr_ack_seqno, *ackno))
                                 goto found;
                 }
-                /* End of the dccpav_records list, not found, exit */
+                /* End of the av_records list, not found, exit */
                 break;
 found:
-                if (between48(avr->dccpavr_ack_seqno, ackno_end_rl, *ackno)) {
+                if (between48(avr->avr_ack_seqno, ackno_end_rl, *ackno)) {
                         const u8 state = *vector & DCCP_ACKVEC_STATE_MASK;
                         if (state != DCCP_ACKVEC_STATE_NOT_RECEIVED) {
                                 dccp_pr_debug("%s ACK vector 0, len=%d, "
@@ -446,9 +437,9 @@ found:
                                               "ACKED!\n",
                                               dccp_role(sk), len,
                                               (unsigned long long)
-                                              avr->dccpavr_ack_seqno,
+                                              avr->avr_ack_seqno,
                                               (unsigned long long)
-                                              avr->dccpavr_ack_ackno);
+                                              avr->avr_ack_ackno);
                                 dccp_ackvec_throw_record(av, avr);
                                 break;
                         }