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| author | Anders Svensson <[email protected]> | 2017-04-16 11:16:47 +0200 |
|---|---|---|
| committer | Anders Svensson <[email protected]> | 2017-06-12 16:13:52 +0200 |
| commit | 398a52b28ab64d1737b15b91b6be0a6e1426303b (patch) | |
| tree | 31fd0d8999d02aca232ffeb19516decd4f82cc3d /lib | |
| parent | f2e75976772b6a1d52a2c71ec1eecb4b338ed632 (diff) | |
| download | otp-398a52b28ab64d1737b15b91b6be0a6e1426303b.tar.gz otp-398a52b28ab64d1737b15b91b6be0a6e1426303b.tar.bz2 otp-398a52b28ab64d1737b15b91b6be0a6e1426303b.zip | |
Make encoding of diameter_avp records more efficient
Prepend the header in a single step.
Before:
{[{{diameter_codec,pack_avp,1}, 7000, 126.074, 51.058}],
{ {diameter_codec,pack_avp,2}, 7000, 126.074, 51.058}, %
[{{diameter_codec,pack_avp,5}, 7000, 51.144, 25.758},
{{diameter_codec,pad,2}, 7000, 23.844, 23.570},
{suspend, 1, 0.028, 0.000}]}.
After:
{[{{diameter_codec,pack_avp,1}, 7000, 78.563, 26.986}],
{ {diameter_codec,pack_avp,2}, 7000, 78.563, 26.986}, %
[{{diameter_codec,pack_avp,6}, 7000, 51.459, 26.381},
{suspend, 4, 0.118, 0.000}]}.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/diameter/src/base/diameter_codec.erl | 31 |
1 files changed, 12 insertions, 19 deletions
diff --git a/lib/diameter/src/base/diameter_codec.erl b/lib/diameter/src/base/diameter_codec.erl index 73da9398f3..656c86df5f 100644 --- a/lib/diameter/src/base/diameter_codec.erl +++ b/lib/diameter/src/base/diameter_codec.erl @@ -40,6 +40,7 @@ -include("diameter_internal.hrl"). -define(MASK(N,I), ((I) band (1 bsl (N)))). +-define(PAD(Len), ((4 - (Len rem 4)) rem 4)). -type u32() :: 0..16#FFFFFFFF. -type u24() :: 0..16#FFFFFF. @@ -561,7 +562,7 @@ collect_avps(<<Code:32, V:1, M:1, P:1, _:5, Len:24, I:V/unit:32, Rest/binary>>, N, Acc) -> DataLen = Len - 8 - V*4, %% Might be negative, which ensures - Pad = (4 - (Len rem 4)) rem 4, %% failure of the Data match below. + Pad = ?PAD(Len), %% failure of the Data match below. VendorId = if 1 == V -> I; 0 == V -> undefined end, %% Duplicate the diameter_avp creation in each branch below to @@ -723,30 +724,22 @@ flag_avp({false, _}, F) -> pack_avp({Code, Flags, VendorId}, Bin) when is_binary(Bin) -> Sz = size(Bin), - pack_avp(Code, Flags, VendorId, Sz, pad(Sz rem 4, Bin)). + pack_avp(Code, Flags, Sz, VendorId, Bin, ?PAD(Sz)). +%% Padding is not included in the length field, as mandated by the RFC. -pad(0, Bin) -> - Bin; -pad(N, Bin) -> - P = 8*(4-N), - <<Bin/binary, 0:P>>. -%% Note that padding is not included in the length field as mandated by -%% the RFC. - -%% pack_avp/5 +%% pack_avp/6 %% %% Prepend the vendor id as required. -pack_avp(Code, Flags, Vid, Sz, Bin) +pack_avp(Code, Flags, Sz, Vid, Bin, Pad) when 0 == Flags band 2#10000000 -> undefined = Vid, %% sanity check - pack_avp(Code, Flags, Sz, Bin); + pack_avp(Code, Flags, Sz, 0, 0, Bin, Pad); -pack_avp(Code, Flags, Vid, Sz, Bin) -> - pack_avp(Code, Flags, Sz+4, <<Vid:32, Bin/binary>>). +pack_avp(Code, Flags, Sz, Vid, Bin, Pad) -> + pack_avp(Code, Flags, Sz+4, Vid, 1, Bin, Pad). -%% pack_avp/4 +%% pack_avp/7 -pack_avp(Code, Flags, Sz, Bin) -> - Length = Sz + 8, - <<Code:32, Flags:8, Length:24, Bin/binary>>. +pack_avp(Code, Flags, Sz, VId, V, Bin, Pad) -> + <<Code:32, Flags:8, (8+Sz):24, VId:V/unit:32, Bin/binary, 0:Pad/unit:8>>. |