remove trailing white spaces from source code files

Trailing white spaces cause problems with git.

Signed-off-by: Mauricio Vasquez B <[email protected]>

examples/cpp/FollyRequestContextSwitch.cc

@@ -35,7 +35,7 @@ int on_context_switch(struct pt_regs *ctx) {
 
  event.pid = bpf_get_current_pid_tgid();
  bpf_get_current_comm(&event.name, sizeof(event.name));
- 
+
  bpf_usdt_readarg(1, ctx, &event.old_addr);
  bpf_usdt_readarg(2, ctx, &event.new_addr);
 

examples/lua/sock-parse-http.lua

@@ -34,7 +34,7 @@ local prog = bpf.socket('lo', function (skb)
  -- Fetch 4 bytes of TCP data and compare
  local h = data(0, 4)
  if h == 'HTTP' or h == 'GET ' or
- h == 'POST' or h == 'PUT ' or 
+ h == 'POST' or h == 'PUT ' or
  h == 'HEAD' or h == 'DELE' then
  -- If hash key doesn't exist, create it
  -- otherwise increment counter

examples/networking/http_filter/http-parse-complete.c

@@ -2,21 +2,21 @@
 #include <net/sock.h>
 #include <bcc/proto.h>
 
-#define IP_TCP 6 
+#define IP_TCP 6
 #define ETH_HLEN 14
 
 struct Key {
  u32 src_ip; //source ip
  u32 dst_ip; //destination ip
  unsigned short src_port; //source port
- unsigned short dst_port; //destination port 
+ unsigned short dst_port; //destination port
 };
 
 struct Leaf {
  int timestamp; //timestamp in ns
 };
 
-//BPF_TABLE(map_type, key_type, leaf_type, table_name, num_entry) 
+//BPF_TABLE(map_type, key_type, leaf_type, table_name, num_entry)
 //map <Key, Leaf>
 //tracing sessions having same Key(dst_ip, src_ip, dst_port,src_port)
 BPF_HASH(sessions, struct Key, struct Leaf, 1024);
@@ -40,7 +40,7 @@ int http_filter(struct __sk_buff *skb) {
  struct ethernet_t *ethernet = cursor_advance(cursor, sizeof(*ethernet));
  //filter IP packets (ethernet type = 0x0800)
  if (!(ethernet->type == 0x0800)) {
- goto DROP; 
+ goto DROP;
  }
 
  struct ip_t *ip = cursor_advance(cursor, sizeof(*ip));
@@ -69,16 +69,16 @@ int http_filter(struct __sk_buff *skb) {
  //value to multiply * 4
  //e.g. ip->hlen = 5 ; IP Header Length = 5 x 4 byte = 20 byte
  ip_header_length = ip->hlen << 2; //SHL 2 -> *4 multiply
- 
+
  //calculate tcp header length
  //value to multiply *4
  //e.g. tcp->offset = 5 ; TCP Header Length = 5 x 4 byte = 20 byte
  tcp_header_length = tcp->offset << 2; //SHL 2 -> *4 multiply
 
  //calculate patload offset and length
- payload_offset = ETH_HLEN + ip_header_length + tcp_header_length; 
+ payload_offset = ETH_HLEN + ip_header_length + tcp_header_length;
  payload_length = ip->tlen - ip_header_length - tcp_header_length;
- 
+
  //http:https://stackoverflow.com/questions/25047905/http-request-minimum-size-in-bytes
  //minimum length of http request is always geater than 7 bytes
  //avoid invalid access memory

examples/networking/http_filter/http-parse-complete.py

@@ -3,7 +3,7 @@
 #Bertrone Matteo - Polytechnic of Turin
 #November 2015
 #
-#eBPF application that parses HTTP packets 
+#eBPF application that parses HTTP packets
 #and extracts (and prints on screen) the URL contained in the GET/POST request.
 #
 #eBPF program http_filter is used as SOCKET_FILTER attached to eth0 interface.
@@ -38,7 +38,7 @@ def toHex(s):
  if len(hv) == 1:
  hv = '0'+hv
  lst.append(hv)
- 
+
  return reduce(lambda x,y:x+y, lst)
 
 #print str until CR+LF
@@ -50,7 +50,7 @@ def printUntilCRLF(str):
  return
  print ("%c" % (str[k]), end = "")
  print("")
- return 
+ return
 
 #cleanup function
 def cleanup():
@@ -71,7 +71,7 @@ def cleanup():
  del bpf_sessions[key]
  except:
  print("cleanup exception.")
- return 
+ return
 
 #args
 def usage():
@@ -155,9 +155,9 @@ def help():
 
  #convert packet into bytearray
  packet_bytearray = bytearray(packet_str)
- 
+
  #ethernet header length
- ETH_HLEN = 14 
+ ETH_HLEN = 14
 
  #IP HEADER
  #https://tools.ietf.org/html/rfc791
@@ -166,18 +166,18 @@ def help():
  # |Version| IHL |Type of Service| Total Length |
  # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  #
- #IHL : Internet Header Length is the length of the internet header 
+ #IHL : Internet Header Length is the length of the internet header
  #value to multiply * 4 byte
  #e.g. IHL = 5 ; IP Header Length = 5 * 4 byte = 20 byte
  #
- #Total length: This 16-bit field defines the entire packet size, 
+ #Total length: This 16-bit field defines the entire packet size,
  #including header and data, in bytes.
 
  #calculate packet total length
  total_length = packet_bytearray[ETH_HLEN + 2] #load MSB
  total_length = total_length << 8 #shift MSB
  total_length = total_length + packet_bytearray[ETH_HLEN+3] #add LSB
- 
+
  #calculate ip header length
  ip_header_length = packet_bytearray[ETH_HLEN] #load Byte
  ip_header_length = ip_header_length & 0x0F #mask bits 0..3
@@ -189,18 +189,18 @@ def help():
 
  ip_src = int(toHex(ip_src_str),16)
  ip_dst = int(toHex(ip_dst_str),16)
- 
- #TCP HEADER 
+
+ #TCP HEADER
  #https://www.rfc-editor.org/rfc/rfc793.txt
- # 12 13 14 15 
- # 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 
+ # 12 13 14 15
+ # 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  # | Data | |U|A|P|R|S|F| |
  # | Offset| Reserved |R|C|S|S|Y|I| Window |
  # | | |G|K|H|T|N|N| |
  # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  #
- #Data Offset: This indicates where the data begins. 
+ #Data Offset: This indicates where the data begins.
  #The TCP header is an integral number of 32 bits long.
  #value to multiply * 4 byte
  #e.g. DataOffset = 5 ; TCP Header Length = 5 * 4 byte = 20 byte
@@ -209,17 +209,17 @@ def help():
  tcp_header_length = packet_bytearray[ETH_HLEN + ip_header_length + 12] #load Byte
  tcp_header_length = tcp_header_length & 0xF0 #mask bit 4..7
  tcp_header_length = tcp_header_length >> 2 #SHR 4 ; SHL 2 -> SHR 2
- 
+
  #retrieve port source/dest
  port_src_str = packet_str[ETH_HLEN+ip_header_length:ETH_HLEN+ip_header_length+2]
  port_dst_str = packet_str[ETH_HLEN+ip_header_length+2:ETH_HLEN+ip_header_length+4]
- 
+
  port_src = int(toHex(port_src_str),16)
  port_dst = int(toHex(port_dst_str),16)
 
  #calculate payload offset
  payload_offset = ETH_HLEN + ip_header_length + tcp_header_length
- 
+
  #payload_string contains only packet payload
  payload_string = packet_str[(payload_offset):(len(packet_bytearray))]
 
@@ -238,32 +238,32 @@ def help():
  #url entirely contained in first packet -> print it all
  printUntilCRLF(payload_string)
 
- #delete current_Key from bpf_sessions, url already printed. current session not useful anymore 
+ #delete current_Key from bpf_sessions, url already printed. current session not useful anymore
  try:
  del bpf_sessions[current_Key]
  except:
  print ("error during delete from bpf map ")
- else: 
- #url NOT entirely contained in first packet 
- #not found \r\n in payload. 
+ else:
+ #url NOT entirely contained in first packet
+ #not found \r\n in payload.
  #save current part of the payload_string in dictionary <key(ips,ipd,ports,portd),payload_string>
  local_dictionary[binascii.hexlify(current_Key)] = payload_string
  else:
  #NO match: HTTP GET/POST NOT found
 
  #check if the packet belong to a session saved in bpf_sessions
  if (current_Key in bpf_sessions):
- #check id the packet belong to a session saved in local_dictionary 
+ #check id the packet belong to a session saved in local_dictionary
  #(local_dictionary mantains HTTP GET/POST url not printed yet because splitted in N packets)
  if (binascii.hexlify(current_Key) in local_dictionary):
  #first part of the HTTP GET/POST url is already present in local dictionary (prev_payload_string)
  prev_payload_string = local_dictionary[binascii.hexlify(current_Key)]
- #looking for CR+LF in current packet. 
+ #looking for CR+LF in current packet.
  if (crlf in payload_string):
  #last packet. containing last part of HTTP GET/POST url splitted in N packets.
  #append current payload
  prev_payload_string += payload_string
- #print HTTP GET/POST url 
+ #print HTTP GET/POST url
  printUntilCRLF(prev_payload_string)
  #clean bpf_sessions & local_dictionary
  try:
@@ -284,7 +284,7 @@ def help():
  except:
  print ("error deleting from map or dict")
  #update dictionary
- local_dictionary[binascii.hexlify(current_Key)] = prev_payload_string 
+ local_dictionary[binascii.hexlify(current_Key)] = prev_payload_string
  else:
  #first part of the HTTP GET/POST url is NOT present in local dictionary
  #bpf_sessions contains invalid entry -> delete it

examples/networking/http_filter/http-parse-simple.c

@@ -2,7 +2,7 @@
 #include <net/sock.h>
 #include <bcc/proto.h>
 
-#define IP_TCP 6 
+#define IP_TCP 6
 #define ETH_HLEN 14
 
 /*eBPF program.
@@ -20,7 +20,7 @@ int http_filter(struct __sk_buff *skb) {
  struct ethernet_t *ethernet = cursor_advance(cursor, sizeof(*ethernet));
  //filter IP packets (ethernet type = 0x0800)
  if (!(ethernet->type == 0x0800)) {
- goto DROP; 
+ goto DROP;
  }
 
  struct ip_t *ip = cursor_advance(cursor, sizeof(*ip));
@@ -40,16 +40,16 @@ int http_filter(struct __sk_buff *skb) {
  //value to multiply * 4
  //e.g. ip->hlen = 5 ; IP Header Length = 5 x 4 byte = 20 byte
  ip_header_length = ip->hlen << 2; //SHL 2 -> *4 multiply
- 
+
  //calculate tcp header length
  //value to multiply *4
  //e.g. tcp->offset = 5 ; TCP Header Length = 5 x 4 byte = 20 byte
  tcp_header_length = tcp->offset << 2; //SHL 2 -> *4 multiply
 
  //calculate patload offset and length
- payload_offset = ETH_HLEN + ip_header_length + tcp_header_length; 
+ payload_offset = ETH_HLEN + ip_header_length + tcp_header_length;
  payload_length = ip->tlen - ip_header_length - tcp_header_length;
- 
+
  //http:https://stackoverflow.com/questions/25047905/http-request-minimum-size-in-bytes
  //minimum length of http request is always geater than 7 bytes
  //avoid invalid access memory

examples/networking/http_filter/http-parse-simple.py

@@ -3,7 +3,7 @@
 #Bertrone Matteo - Polytechnic of Turin
 #November 2015
 #
-#eBPF application that parses HTTP packets 
+#eBPF application that parses HTTP packets
 #and extracts (and prints on screen) the URL contained in the GET/POST request.
 #
 #eBPF program http_filter is used as SOCKET_FILTER attached to eth0 interface.
@@ -90,9 +90,9 @@ def help():
 
  #convert packet into bytearray
  packet_bytearray = bytearray(packet_str)
- 
+
  #ethernet header length
- ETH_HLEN = 14 
+ ETH_HLEN = 14
 
  #IP HEADER
  #https://tools.ietf.org/html/rfc791
@@ -101,34 +101,34 @@ def help():
  # |Version| IHL |Type of Service| Total Length |
  # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  #
- #IHL : Internet Header Length is the length of the internet header 
+ #IHL : Internet Header Length is the length of the internet header
  #value to multiply * 4 byte
  #e.g. IHL = 5 ; IP Header Length = 5 * 4 byte = 20 byte
  #
- #Total length: This 16-bit field defines the entire packet size, 
+ #Total length: This 16-bit field defines the entire packet size,
  #including header and data, in bytes.
 
  #calculate packet total length
  total_length = packet_bytearray[ETH_HLEN + 2] #load MSB
  total_length = total_length << 8 #shift MSB
  total_length = total_length + packet_bytearray[ETH_HLEN+3] #add LSB
- 
+
  #calculate ip header length
  ip_header_length = packet_bytearray[ETH_HLEN] #load Byte
  ip_header_length = ip_header_length & 0x0F #mask bits 0..3
  ip_header_length = ip_header_length << 2 #shift to obtain length
 
- #TCP HEADER 
+ #TCP HEADER
  #https://www.rfc-editor.org/rfc/rfc793.txt
- # 12 13 14 15 
- # 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 
+ # 12 13 14 15
+ # 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  # | Data | |U|A|P|R|S|F| |
  # | Offset| Reserved |R|C|S|S|Y|I| Window |
  # | | |G|K|H|T|N|N| |
  # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  #
- #Data Offset: This indicates where the data begins. 
+ #Data Offset: This indicates where the data begins.
  #The TCP header is an integral number of 32 bits long.
  #value to multiply * 4 byte
  #e.g. DataOffset = 5 ; TCP Header Length = 5 * 4 byte = 20 byte
@@ -137,10 +137,10 @@ def help():
  tcp_header_length = packet_bytearray[ETH_HLEN + ip_header_length + 12] #load Byte
  tcp_header_length = tcp_header_length & 0xF0 #mask bit 4..7
  tcp_header_length = tcp_header_length >> 2 #SHR 4 ; SHL 2 -> SHR 2
- 
+
  #calculate payload offset
  payload_offset = ETH_HLEN + ip_header_length + tcp_header_length
- 
+
  #print first line of the HTTP GET/POST request
  #line ends with 0xOD 0xOA (\r\n)
  #(if we want to print all the header print until \r\n\r\n)

examples/tracing/strlen_hist.py

@@ -10,7 +10,7 @@
 #
 # Copyright (c) PLUMgrid, Inc.
 # Licensed under the Apache License, Version 2.0 (the "License")
-# 
+#
 # Example output:
 # $ sudo ./strlen_hist.py
 # 22:12:52

src/cc/frontends/clang/tp_frontend_action.cc

@@ -122,7 +122,7 @@ static inline bool _is_tracepoint_struct_type(string const& type_name,
  // (?:struct|class)\s+tracepoint__(\S+)__(\S+)
  // Not using std::regex because older versions of GCC don't support it yet.
  // E.g., the libstdc++ that ships with Ubuntu 14.04.
- 
+
  auto first_space_pos = type_name.find_first_of("\t ");
  if (first_space_pos == string::npos)
  return false;

src/cc/frontends/clang/tp_frontend_action.h

@@ -53,7 +53,7 @@ class TracepointTypeVisitor :
  clang::ASTContext &C;
  clang::DiagnosticsEngine &diag_;
  clang::Rewriter &rewriter_;
- llvm::raw_ostream &out_; 
+ llvm::raw_ostream &out_;
 };
 
 class TracepointTypeConsumer : public clang::ASTConsumer {

src/cc/frontends/p4/compiler/compilationException.py

@@ -3,10 +3,10 @@
 
 class CompilationException(Exception):
  """Signals an error during compilation"""
- def __init__(self, isBug, format, *message): 
+ def __init__(self, isBug, format, *message):
  # isBug: indicates that this is a compiler bug
  super(CompilationException, self).__init__()
- 
+
  assert isinstance(format, str)
  assert isinstance(isBug, bool)
  self.message = message