summaryrefslogtreecommitdiff
path: root/bpf_lexer.l
AgeCommit message (Collapse)AuthorFilesLines
2013-09-06bpfc: add gnu as style %-register prefixDaniel Borkmann1-0/+1
Let a and x register also be addressed as %x and %a. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-23bpfc: allow bpf programs to be passed to cppDaniel Borkmann1-0/+1
This patch allows bpf programs to be passed to the C preprocessor before handing over to bpfc. Example: #define ETH_P_IP 0x800 ldh [12] jne #ETH_P_IP, drop ldb [23] jneq #6, drop ldh [20] jset #0x1fff, drop ldxb 4 * ([14] & 0xf) ldh [x + 14] jeq #0x16, pass ldh [x + 16] jne #0x16, drop pass: ret #-1 drop: ret #0 Compile with: bpfc -i foo -p Suggested-by: John Lange <JLange@trendium.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-19bpfc: filter: add poff ancillary operationDaniel Borkmann1-0/+1
In preparation for [1], add the #poff operation, so that users can dynamically truncate packets on the payload start offset. This is useful for several reasons: privacy, speed, ... Example for bpfc: ld #poff ret a [1] http://thread.gmane.org/gmane.linux.network/262512 Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-15all: import netsniff-ng 0.5.8-rc0 sourceDaniel Borkmann1-0/+126
We decided to get rid of the old Git history and start a new one for several reasons: *) Allow / enforce only high-quality commits (which was not the case for many commits in the history), have a policy that is more close to the one from the Linux kernel. With high quality commits, we mean code that is logically split into commits and commit messages that are signed-off and have a proper subject and message body. We do not allow automatic Github merges anymore, since they are total bullshit. However, we will either cherry-pick your patches or pull them manually. *) The old archive was about ~27MB for no particular good reason. This basically derived from the bad decision that also some PDF files where stored there. From this moment onwards, no binary objects are allowed to be stored in this repository anymore. The old archive is not wiped away from the Internet. You will still be able to find it, e.g. on git.cryptoism.org etc. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>