| created | 2022-11-28T11:49:45Z |
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| begin | 2022-11-10T16:29:20Z |
| end | 2022-11-10T17:17:47Z |
| path | src/sys |
| commits | 1 |
| date | 2022-11-10T17:17:47Z | |||
|---|---|---|---|---|
| author | dlg | |||
| files | src/sys/net/if.c | log | diff | annotate |
| message |
bring back r1.673: replace SRP with SMR in the if_idxmap. when i first wrote if_idxmap i didn't realise (and no one thought to tell me) that index 0 was special and means "no interface", so while here use the 0th slot in the interface map to store the length of the map instead of prepending the map with a length field. if_get() now special cases index 0 and returns NULL directly. this also means the size of the map is now always a power of 2, which is a nicer fit with what the kernel malloc aprovides. the problem with r1.673 that hrvoje popovski found was that attaching a lot of interfaces during autoconf would lock up when growing the map called smr_barrier. the fix in this diff is to (ab)use the usedidx bitmap to store an smr_entry and defer the freeing of the interface pointer map with it. tested by hrvoje popovski tweaks and ok visa@ |
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