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fib_trie: Fix the description of pos and bits 

1) Fix one typo: s/tn/tp/
2) Fix the description about the "u" bits.

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xunlei Pang 2016-08-18 12:33:28 +08:00 committed by David S. Miller
parent 4587a996b4
commit 98a384eca9
1 changed files with 2 additions and 2 deletions
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4
net/ipv4/fib_trie.c
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@ -249,7 +249,7 @@ static inline unsigned long get_index(t_key key, struct key_vector *kv)
* index into the parent's child array. That is, they will be used to find
* 'n' among tp's children.
*
* The bits from (n->pos + n->bits) to (tn->pos - 1) - "S" - are skipped bits
* The bits from (n->pos + n->bits) to (tp->pos - 1) - "S" - are skipped bits
* for the node n.
*
* All the bits we have seen so far are significant to the node n. The rest
@ -258,7 +258,7 @@ static inline unsigned long get_index(t_key key, struct key_vector *kv)
* The bits from (n->pos) to (n->pos + n->bits - 1) - "C" - are the index into
* n's child array, and will of course be different for each child.
*
* The rest of the bits, from 0 to (n->pos + n->bits), are completely unknown
* The rest of the bits, from 0 to (n->pos -1) - "u" - are completely unknown
* at this point.
*/